{"title":"Heat of Formation of Nitronium Perchlorate","authors":"A. A. Gilliland","doi":"10.6028/JRES.066A.045","DOIUrl":null,"url":null,"abstract":"Calorimetric measurements of the heat of solution of nitronium perchlorate (NO2ClO4) and of a mixture of potassium nitrate and potassium perchlorate in aqueous potassium hydroxide have been made. These are combined to give: NO2ClO4(c)+4KOH(in5300H2O)→KClO4(c)+KNO3(c)+2KOH(in5300H2O)+H2O(liq)ΔH=−285.80±0.38kj/mole=−68.31±0.09kcal/molefrom which the standard heat of formation of nitronium perchlorate is calculated as ΔHf°(25°C)NO2ClO4(c)=37.19±1.0kj/mole=8.89±0.25kcal/mole,in which the uncertainty represents twice the estimated overall standard deviation of the result.","PeriodicalId":94340,"journal":{"name":"Journal of research of the National Bureau of Standards. Section A, Physics and chemistry","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1962-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of research of the National Bureau of Standards. Section A, Physics and chemistry","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.6028/JRES.066A.045","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
Calorimetric measurements of the heat of solution of nitronium perchlorate (NO2ClO4) and of a mixture of potassium nitrate and potassium perchlorate in aqueous potassium hydroxide have been made. These are combined to give: NO2ClO4(c)+4KOH(in5300H2O)→KClO4(c)+KNO3(c)+2KOH(in5300H2O)+H2O(liq)ΔH=−285.80±0.38kj/mole=−68.31±0.09kcal/molefrom which the standard heat of formation of nitronium perchlorate is calculated as ΔHf°(25°C)NO2ClO4(c)=37.19±1.0kj/mole=8.89±0.25kcal/mole,in which the uncertainty represents twice the estimated overall standard deviation of the result.
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