新規更新August 15, 2018 at 01:33PM
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Kali peroxit
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{| class="infobox bordered" style="border-collapse: collapse; width: 22em; text-align: left; margin-bottom: 10px;"
|+ id="5" style="text-align:center;" |Kali peroxit
| colspan="2" id="9" style="text-align:center; padding:2px;" |[[File:K2O2-structure.jpg|220x220px]]
|- id="10"
! colspan="2" id="11" style="background: #f8eaba; text-align: center;" |Names
|- id="13"
| colspan="2" id="14" style="text-align:left;" |IUPAC name
<div id="17" style="max-width:22em; word-wrap:break-word; padding-left:1.7em;">Potassium peroxide</div>
|- id="19"
! colspan="2" id="20" style="background: #f8eaba; text-align: center;" |Identifiers
|- id="22"
| id="23" |<div id="24" style="padding:0.1em 0;line-height:1.2em;">[[Số đăng ký CAS|CAS Number]]</div>
| id="27" |<div class="plainlist" id="28">
* <span title="www.commonchemistry.org">[http://www.commonchemistry.org/ChemicalDetail.aspx?ref=17014-71-0 17014-71-0]</span><sup> </sup><span id="32"><sup>[[File:Yes_check.svg|liên_kết=|thế=☑|7x7px]]</sup></span><sup>Y</sup>
</div>
|- id="34"
| id="35" |<div id="36" style="padding:0.1em 0;line-height:1.2em;">3D model (JSmol)</div>
| id="39" |<div class="plainlist" id="40">
* <span title="chemapps.stolaf.edu (3D interactive model)">[https://ift.tt/2nDweTZ Interactive image]</span>
</div>
|- id="44"
| id="45" |ChemSpider
| id="48" |<div class="plainlist" id="49">
* <span title="www.chemspider.com">[http://www.chemspider.com/Chemical-Structure.26237.html 26237]</span><sup> </sup><span id="53"><sup>[[File:X_mark.svg|liên_kết=|thế=☒|8x8px]]</sup></span><sup>N</sup>
</div>
|- id="55"
| id="56" |<span title="echa.europa.eu">ECHA InfoCard</span>
| id="59" |[https://ift.tt/2w9qCVl 100.037.339]
|- id="61"
| id="62" |<span title="European Community number (chemical identifier)">EC Number</span>
| id="65" |241-089-8
|- id="67"
| id="68" |<div id="69" style="padding:0.1em 0;line-height:1.2em;">PubChem <abbr title="Compound ID">CID</abbr></div>
| id="72" |<div class="plainlist" id="73">
* <span title="pubchem.ncbi.nlm.nih.gov">[https://ift.tt/2vLRH1A 28202]</span>
</div>
|- id="77"
| colspan="2" id="78" |<div class="NavFrame collapsed" id="79" style="border: none; padding: 0;">
<div class="NavHead" id="80" style="font-size: 105%; text-align:left; font-weight:normal; background:transparent;">InChI</div>
* <div id="85" style="border-top:1px solid #ccc; padding:0.2em 0 0.2em 1.5em; text-align:left;"><div id="86" style="word-wrap:break-word; text-indent:-1.5em; font-size:11px; line-height:120%;">InChI=1S/2K.O2/c;;1-2/q2*+1;-2<sup> </sup><span id="89"><sup>[[File:X_mark.svg|liên_kết=|thế=☒|8x8px]]</sup></span><sup>N</sup></div><div id="91" style="word-wrap:break-word; text-indent:-1.5em; font-size:11px; line-height:120%;">Key: XXQBEVHPUKOQEO-UHFFFAOYSA-N<sup> </sup><span id="93"><sup>[[File:X_mark.svg|liên_kết=|thế=☒|8x8px]]</sup></span><sup>N</sup></div></div>
* <div id="96" style="border-top:1px solid #ccc; padding:0.2em 0 0.2em 1.5em; text-align:left;"><div id="97" style="word-wrap:break-word; text-indent:-1.5em; font-size:11px; line-height:120%;">InChI=1/2K.O2/c;;1-2/q2*+1;-2</div><div id="100" style="word-wrap:break-word; text-indent:-1.5em; font-size:11px; line-height:120%;">Key: XXQBEVHPUKOQEO-UHFFFAOYAV</div></div>
</div>
|- id="102"
| colspan="2" id="103" |<div class="NavFrame collapsed" id="104" style="border: none; padding: 0;">
<div class="NavHead" id="105" style="font-size: 105%; text-align:left; font-weight:normal; background:transparent;">SMILES</div>
* <div id="110" style="border-top:1px solid #ccc; padding:0.2em 0 0.2em 1.6em; word-wrap:break-word; text-indent:-1.5em; text-align:left; font-size:11px; line-height:120%;">[O-][O-].[K+].[K+]</div>
</div>
|- id="114"
! colspan="2" id="115" style="background: #f8eaba; text-align: center;" |Properties
|- id="117"
| id="118" |<div id="119" style="padding:0.1em 0;line-height:1.2em;">[[Công thức hóa học|Công thức phân tử]]</div>
| id="122" |K<sub>2</sub>O<sub>2</sub> 
|- id="124"
| id="125" |[[Khối lượng mol|Molar mass]]
| id="128" |110.196 g/mol   
|- id="130"
| id="131" |Appearance
| id="133" |yellow amorphous solid
|- id="135"
| id="136" |[[Nhiệt độ nóng chảy|Melting point]]
| id="139" | 490 °C (914 °F; 763 K) 
|- id="141"
| id="142" |<div id="143" style="padding:0.1em 0;line-height:1.2em;">[[Dung dịch nước|Solubility in water]]</div>
| id="146" |reacts with water<ref name="hand"><cite class="citation book">Lide, David R. (1998). ''Handbook of Chemistry and Physics'' (87 ed.). Boca Raton, Florida: CRC Press. pp. 477; 520. [//en.wikipedia.org/wiki/International_Standard_Book_Number ISBN] [//en.wikipedia.org/wiki/Special:BookSources/0-8493-0594-2 0-8493-0594-2].</cite><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Handbook+of+Chemistry+and+Physics&rft.place=Boca+Raton%2C+Florida&rft.pages=477%3B+520&rft.edition=87&rft.pub=CRC+Press&rft.date=1998&rft.isbn=0-8493-0594-2&rft.aulast=Lide&rft.aufirst=David+R.&rfr_id=info%3Asid%2Fen.wikipedia.org%3APotassium+peroxide"> </span></ref>
|- id="148"
! colspan="2" id="149" style="background: #f8eaba; text-align: center;" |Structure
|- id="151"
| id="152" |<div id="153" style="padding:0.1em 0;line-height:1.2em;">[[Cấu trúc tinh thể|Crystal structure]]</div>
| id="156" |[[Hệ tinh thể trực thoi|Orthorombic]]
|- id="159"
| id="160" |<div id="161" style="padding:0.1em 0;line-height:1.2em;">Space group</div>
| id="164" |Cmca, [[Kí hiệu Pearson|oS16]]
|- id="167"
! colspan="2" id="168" style="background: #f8eaba; text-align: center;" |Thermochemistry
|- id="170"
| id="171" |<div id="172" style="padding:0.1em 0;line-height:1.2em;">Std molar<br />entropy (''S''<sup><s>o</s></sup><sub>298</sub>)</div>
| id="175" |113 J·mol<sup>−1</sup>·K<sup>−1</sup><ref name="b1" />
|- id="177"
| id="178" |<div id="179" style="padding:0.1em 0;line-height:1.2em;">Std enthalpy of<br />formation (Δ<sub>f</sub>''H''<sup><s>o</s></sup><sub>298</sub>)</div>
| id="182" |−496 kJ·mol<sup>−1</sup><ref name="b1"><cite class="citation book">Zumdahl, Steven S. (2009). ''Chemical Principles 6th Ed''. Houghton Mifflin Company. p. A22. [//en.wikipedia.org/wiki/International_Standard_Book_Number ISBN] [//en.wikipedia.org/wiki/Special:BookSources/0-618-94690-X 0-618-94690-X].</cite><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Chemical+Principles+6th+Ed.&rft.pages=A22&rft.pub=Houghton+Mifflin+Company&rft.date=2009&rft.isbn=0-618-94690-X&rft.au=Zumdahl%2C+Steven+S.&rfr_id=info%3Asid%2Fen.wikipedia.org%3APotassium+peroxide"> </span></ref>
|- id="184"
! colspan="2" id="185" style="background: #f8eaba; text-align: center;" |Hazards
|- id="187"
| id="188" |[[NFPA 704]]
| id="191" |<div id="192" style="width:100%; background:transparent;"><div id="container" style="margin:0 auto; width:82px; font-family:sans-serif"><div class="nounderlines" id="on_image_elements" style="background:; float:left; font-size:20px; text-align:center; vertical-align:middle; position:relative; height:80px; width:80px; padding:1px;">
<div id="diamond_image_and_mw_ImageMap" style="position:absolute; height:80px; width:80px;"><imagemap>
File:NFPA 704.svg|80px|alt=NFPA 704 four-colored diamond
poly 300 0 450 150 300 300 150 150 [[NFPA 704#Red|Flammability code 0: Will not burn. E.g., water]]
poly 150 150 300 300 150 450 0 300 [[NFPA 704#Blue|Health code 3: Short exposure could cause serious temporary or residual injury. E.g., chlorine gas]]
poly 450 150 600 300 450 450 300 300 [[NFPA 704#Yellow|Reactivity code 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g., phosphorus]]
poly 300 300 450 450 300 600 150 450 [[NFPA 704#White|Special hazard W+OX: Reacts with water in an unusual or dangerous manner AND is oxidizer.]]
desc none
</imagemap>
</div><div id="196" style="width:12px; text-align:center; position:absolute; top:12px; left:35px;">
[[NFPA 704|0]]</div><div id="199" style="width:13px; text-align:center; position:absolute; top:31px; left:15px;">
[[NFPA 704|3]]</div><div id="202" style="width:13px; text-align:center; position:absolute; top:31px; left:54px;">
[[NFPA 704|2]]</div><div id="205" style="vertical-align:middle; text-align:center; line-height:80%; position:absolute; top:52px;">[[NFPA 704|<s>W</s><br />OX]]</div></div></div></div>
|- id="208"
! colspan="2" id="209" style="background: #f8eaba; text-align: center;" |Related compounds
|- id="211"
| id="212" |<div id="213" style="padding:0.1em 0;line-height:1.2em;">Other [[Ion|anions]]</div>
| id="216" |[[Kali oxit]]<br />[[Kali superoxit|Kali superoxi]]<nowiki/>t<br />[[Kali clorua]]
|- id="221"
| id="222" |<div id="223" style="padding:0.1em 0;line-height:1.2em;">Other [[Ion|cations]]</div>
| id="226" |[[Lithium peroxide|Liti peroxit]]<br />[[Natri peroxit]]
|- id="230"
| colspan="2" id="231" style="text-align:left; background:#f8eaba;" |<div id="232" style="margin:0 auto; text-align:left;"><div id="233" style="padding:0.1em 0;line-height:1.2em;">Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).</div></div>
|- id="236" style="background:#f8eaba; border-top:2px solid transparent;"
| colspan="2" id="237" style="text-align:center;" |<span id="238">[[File:X_mark.svg|liên_kết=|thế=☒|14x14px]]</span>N <span class="reflink plainlinks nourlexpansion">[//en.wikipedia.org/w/index.php?title=Special:ComparePages&rev1=443287436&page2=Potassium+peroxide verify]</span> (what is <span id="241"><sup>[[File:Yes_check.svg|liên_kết=|thế=☑|7x7px]]</sup></span><sup>Y</sup><span id="243"><sup>[[File:X_mark.svg|liên_kết=|thế=☒|8x8px]]</sup></span><sup>N</sup> ?)
|- id="246" style="background:#f8eaba; border-top:2px solid transparent;"
| colspan="2" id="247" style="text-align:center;" |Infobox references
|- id="250" style="background:#f8eaba;"
|}
'''Kali peroxit''' là một [[hợp chất vô cơ]] với [[Công thức hóa học|công thức phân tử]] K<sub>2</sub>O<sub>2</sub>. Nó được hình thành khi [[kali]] phản ứng với oxy trong không khí, tạo ra cùng với [[kali oxit]] (K<sub>2</sub>O) và [[Kali superoxit|kali superoxide]] (KO<sub>2</sub>).
[[Tập tin:Kristallstruktur_Kaliumperoxid.png|trái|nhỏ|Cấu trúc tinh thể của kali peroxit]]
== Tính chất hóa học ==
Kali peroxit phản ứng với [[nước]] để tạo thành [[kali hiđroxit]] và [[Ôxy|oxi]]:
:2 K<sub>2</sub>O<sub>2</sub> + 2 H<sub>2</sub>O → 4 KOH + O<sub>2</sub>
== Tài liệu tham khảo ==
[[Thể loại:Hợp chất kali]]
|+ id="5" style="text-align:center;" |Kali peroxit
| colspan="2" id="9" style="text-align:center; padding:2px;" |[[File:K2O2-structure.jpg|220x220px]]
|- id="10"
! colspan="2" id="11" style="background: #f8eaba; text-align: center;" |Names
|- id="13"
| colspan="2" id="14" style="text-align:left;" |IUPAC name
<div id="17" style="max-width:22em; word-wrap:break-word; padding-left:1.7em;">Potassium peroxide</div>
|- id="19"
! colspan="2" id="20" style="background: #f8eaba; text-align: center;" |Identifiers
|- id="22"
| id="23" |<div id="24" style="padding:0.1em 0;line-height:1.2em;">[[Số đăng ký CAS|CAS Number]]</div>
| id="27" |<div class="plainlist" id="28">
* <span title="www.commonchemistry.org">[http://www.commonchemistry.org/ChemicalDetail.aspx?ref=17014-71-0 17014-71-0]</span><sup> </sup><span id="32"><sup>[[File:Yes_check.svg|liên_kết=|thế=☑|7x7px]]</sup></span><sup>Y</sup>
</div>
|- id="34"
| id="35" |<div id="36" style="padding:0.1em 0;line-height:1.2em;">3D model (JSmol)</div>
| id="39" |<div class="plainlist" id="40">
* <span title="chemapps.stolaf.edu (3D interactive model)">[https://ift.tt/2nDweTZ Interactive image]</span>
</div>
|- id="44"
| id="45" |ChemSpider
| id="48" |<div class="plainlist" id="49">
* <span title="www.chemspider.com">[http://www.chemspider.com/Chemical-Structure.26237.html 26237]</span><sup> </sup><span id="53"><sup>[[File:X_mark.svg|liên_kết=|thế=☒|8x8px]]</sup></span><sup>N</sup>
</div>
|- id="55"
| id="56" |<span title="echa.europa.eu">ECHA InfoCard</span>
| id="59" |[https://ift.tt/2w9qCVl 100.037.339]
|- id="61"
| id="62" |<span title="European Community number (chemical identifier)">EC Number</span>
| id="65" |241-089-8
|- id="67"
| id="68" |<div id="69" style="padding:0.1em 0;line-height:1.2em;">PubChem <abbr title="Compound ID">CID</abbr></div>
| id="72" |<div class="plainlist" id="73">
* <span title="pubchem.ncbi.nlm.nih.gov">[https://ift.tt/2vLRH1A 28202]</span>
</div>
|- id="77"
| colspan="2" id="78" |<div class="NavFrame collapsed" id="79" style="border: none; padding: 0;">
<div class="NavHead" id="80" style="font-size: 105%; text-align:left; font-weight:normal; background:transparent;">InChI</div>
* <div id="85" style="border-top:1px solid #ccc; padding:0.2em 0 0.2em 1.5em; text-align:left;"><div id="86" style="word-wrap:break-word; text-indent:-1.5em; font-size:11px; line-height:120%;">InChI=1S/2K.O2/c;;1-2/q2*+1;-2<sup> </sup><span id="89"><sup>[[File:X_mark.svg|liên_kết=|thế=☒|8x8px]]</sup></span><sup>N</sup></div><div id="91" style="word-wrap:break-word; text-indent:-1.5em; font-size:11px; line-height:120%;">Key: XXQBEVHPUKOQEO-UHFFFAOYSA-N<sup> </sup><span id="93"><sup>[[File:X_mark.svg|liên_kết=|thế=☒|8x8px]]</sup></span><sup>N</sup></div></div>
* <div id="96" style="border-top:1px solid #ccc; padding:0.2em 0 0.2em 1.5em; text-align:left;"><div id="97" style="word-wrap:break-word; text-indent:-1.5em; font-size:11px; line-height:120%;">InChI=1/2K.O2/c;;1-2/q2*+1;-2</div><div id="100" style="word-wrap:break-word; text-indent:-1.5em; font-size:11px; line-height:120%;">Key: XXQBEVHPUKOQEO-UHFFFAOYAV</div></div>
</div>
|- id="102"
| colspan="2" id="103" |<div class="NavFrame collapsed" id="104" style="border: none; padding: 0;">
<div class="NavHead" id="105" style="font-size: 105%; text-align:left; font-weight:normal; background:transparent;">SMILES</div>
* <div id="110" style="border-top:1px solid #ccc; padding:0.2em 0 0.2em 1.6em; word-wrap:break-word; text-indent:-1.5em; text-align:left; font-size:11px; line-height:120%;">[O-][O-].[K+].[K+]</div>
</div>
|- id="114"
! colspan="2" id="115" style="background: #f8eaba; text-align: center;" |Properties
|- id="117"
| id="118" |<div id="119" style="padding:0.1em 0;line-height:1.2em;">[[Công thức hóa học|Công thức phân tử]]</div>
| id="122" |K<sub>2</sub>O<sub>2</sub> 
|- id="124"
| id="125" |[[Khối lượng mol|Molar mass]]
| id="128" |110.196 g/mol   
|- id="130"
| id="131" |Appearance
| id="133" |yellow amorphous solid
|- id="135"
| id="136" |[[Nhiệt độ nóng chảy|Melting point]]
| id="139" | 490 °C (914 °F; 763 K) 
|- id="141"
| id="142" |<div id="143" style="padding:0.1em 0;line-height:1.2em;">[[Dung dịch nước|Solubility in water]]</div>
| id="146" |reacts with water<ref name="hand"><cite class="citation book">Lide, David R. (1998). ''Handbook of Chemistry and Physics'' (87 ed.). Boca Raton, Florida: CRC Press. pp. 477; 520. [//en.wikipedia.org/wiki/International_Standard_Book_Number ISBN] [//en.wikipedia.org/wiki/Special:BookSources/0-8493-0594-2 0-8493-0594-2].</cite><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Handbook+of+Chemistry+and+Physics&rft.place=Boca+Raton%2C+Florida&rft.pages=477%3B+520&rft.edition=87&rft.pub=CRC+Press&rft.date=1998&rft.isbn=0-8493-0594-2&rft.aulast=Lide&rft.aufirst=David+R.&rfr_id=info%3Asid%2Fen.wikipedia.org%3APotassium+peroxide"> </span></ref>
|- id="148"
! colspan="2" id="149" style="background: #f8eaba; text-align: center;" |Structure
|- id="151"
| id="152" |<div id="153" style="padding:0.1em 0;line-height:1.2em;">[[Cấu trúc tinh thể|Crystal structure]]</div>
| id="156" |[[Hệ tinh thể trực thoi|Orthorombic]]
|- id="159"
| id="160" |<div id="161" style="padding:0.1em 0;line-height:1.2em;">Space group</div>
| id="164" |Cmca, [[Kí hiệu Pearson|oS16]]
|- id="167"
! colspan="2" id="168" style="background: #f8eaba; text-align: center;" |Thermochemistry
|- id="170"
| id="171" |<div id="172" style="padding:0.1em 0;line-height:1.2em;">Std molar<br />entropy (''S''<sup><s>o</s></sup><sub>298</sub>)</div>
| id="175" |113 J·mol<sup>−1</sup>·K<sup>−1</sup><ref name="b1" />
|- id="177"
| id="178" |<div id="179" style="padding:0.1em 0;line-height:1.2em;">Std enthalpy of<br />formation (Δ<sub>f</sub>''H''<sup><s>o</s></sup><sub>298</sub>)</div>
| id="182" |−496 kJ·mol<sup>−1</sup><ref name="b1"><cite class="citation book">Zumdahl, Steven S. (2009). ''Chemical Principles 6th Ed''. Houghton Mifflin Company. p. A22. [//en.wikipedia.org/wiki/International_Standard_Book_Number ISBN] [//en.wikipedia.org/wiki/Special:BookSources/0-618-94690-X 0-618-94690-X].</cite><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Chemical+Principles+6th+Ed.&rft.pages=A22&rft.pub=Houghton+Mifflin+Company&rft.date=2009&rft.isbn=0-618-94690-X&rft.au=Zumdahl%2C+Steven+S.&rfr_id=info%3Asid%2Fen.wikipedia.org%3APotassium+peroxide"> </span></ref>
|- id="184"
! colspan="2" id="185" style="background: #f8eaba; text-align: center;" |Hazards
|- id="187"
| id="188" |[[NFPA 704]]
| id="191" |<div id="192" style="width:100%; background:transparent;"><div id="container" style="margin:0 auto; width:82px; font-family:sans-serif"><div class="nounderlines" id="on_image_elements" style="background:; float:left; font-size:20px; text-align:center; vertical-align:middle; position:relative; height:80px; width:80px; padding:1px;">
<div id="diamond_image_and_mw_ImageMap" style="position:absolute; height:80px; width:80px;"><imagemap>
File:NFPA 704.svg|80px|alt=NFPA 704 four-colored diamond
poly 300 0 450 150 300 300 150 150 [[NFPA 704#Red|Flammability code 0: Will not burn. E.g., water]]
poly 150 150 300 300 150 450 0 300 [[NFPA 704#Blue|Health code 3: Short exposure could cause serious temporary or residual injury. E.g., chlorine gas]]
poly 450 150 600 300 450 450 300 300 [[NFPA 704#Yellow|Reactivity code 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g., phosphorus]]
poly 300 300 450 450 300 600 150 450 [[NFPA 704#White|Special hazard W+OX: Reacts with water in an unusual or dangerous manner AND is oxidizer.]]
desc none
</imagemap>
</div><div id="196" style="width:12px; text-align:center; position:absolute; top:12px; left:35px;">
[[NFPA 704|0]]</div><div id="199" style="width:13px; text-align:center; position:absolute; top:31px; left:15px;">
[[NFPA 704|3]]</div><div id="202" style="width:13px; text-align:center; position:absolute; top:31px; left:54px;">
[[NFPA 704|2]]</div><div id="205" style="vertical-align:middle; text-align:center; line-height:80%; position:absolute; top:52px;">[[NFPA 704|<s>W</s><br />OX]]</div></div></div></div>
|- id="208"
! colspan="2" id="209" style="background: #f8eaba; text-align: center;" |Related compounds
|- id="211"
| id="212" |<div id="213" style="padding:0.1em 0;line-height:1.2em;">Other [[Ion|anions]]</div>
| id="216" |[[Kali oxit]]<br />[[Kali superoxit|Kali superoxi]]<nowiki/>t<br />[[Kali clorua]]
|- id="221"
| id="222" |<div id="223" style="padding:0.1em 0;line-height:1.2em;">Other [[Ion|cations]]</div>
| id="226" |[[Lithium peroxide|Liti peroxit]]<br />[[Natri peroxit]]
|- id="230"
| colspan="2" id="231" style="text-align:left; background:#f8eaba;" |<div id="232" style="margin:0 auto; text-align:left;"><div id="233" style="padding:0.1em 0;line-height:1.2em;">Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).</div></div>
|- id="236" style="background:#f8eaba; border-top:2px solid transparent;"
| colspan="2" id="237" style="text-align:center;" |<span id="238">[[File:X_mark.svg|liên_kết=|thế=☒|14x14px]]</span>N <span class="reflink plainlinks nourlexpansion">[//en.wikipedia.org/w/index.php?title=Special:ComparePages&rev1=443287436&page2=Potassium+peroxide verify]</span> (what is <span id="241"><sup>[[File:Yes_check.svg|liên_kết=|thế=☑|7x7px]]</sup></span><sup>Y</sup><span id="243"><sup>[[File:X_mark.svg|liên_kết=|thế=☒|8x8px]]</sup></span><sup>N</sup> ?)
|- id="246" style="background:#f8eaba; border-top:2px solid transparent;"
| colspan="2" id="247" style="text-align:center;" |Infobox references
|- id="250" style="background:#f8eaba;"
|}
'''Kali peroxit''' là một [[hợp chất vô cơ]] với [[Công thức hóa học|công thức phân tử]] K<sub>2</sub>O<sub>2</sub>. Nó được hình thành khi [[kali]] phản ứng với oxy trong không khí, tạo ra cùng với [[kali oxit]] (K<sub>2</sub>O) và [[Kali superoxit|kali superoxide]] (KO<sub>2</sub>).
[[Tập tin:Kristallstruktur_Kaliumperoxid.png|trái|nhỏ|Cấu trúc tinh thể của kali peroxit]]
== Tính chất hóa học ==
Kali peroxit phản ứng với [[nước]] để tạo thành [[kali hiđroxit]] và [[Ôxy|oxi]]:
:2 K<sub>2</sub>O<sub>2</sub> + 2 H<sub>2</sub>O → 4 KOH + O<sub>2</sub>
== Tài liệu tham khảo ==
[[Thể loại:Hợp chất kali]]
https://ift.tt/2w7xdzx
