Chemistry-
General
Easy
Question
Fromthefollowingdata,theheatofformationof Ca(OH)2(s) at18°Cis......Kcal.
i)CaO(s)+HO()=Ca(OH)(s);ΔH18°C=–15.26Kcal....
ii)H2O()=H2(g)+1/2O2(g)ΔH18°C=68.37Kcal......
iii)Ca(s)+1/2O2(g)=CaO(s)ΔH18°C=–151.80Kcal...
- –98.69
- –235.43
- 194.91
- 98.69
The correct answer is: –235.43
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