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Q.

Given the reaction at 9670C and 1 atm.CaCO3s ⇌CaOs +CO2s∆H=176  kJ mol-1,  then ∆E equals

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a

156.6 kJ

b

165.7 kJ

c

16.6 kJ

d

1.656 kJ

answer is B.

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Detailed Solution

∆H=∆E+∆ngRT Here     ∆ng=1, T=967+273=1240 K 176=∆E +1 × 8.314 × 12401000kJ 176=∆E + 10.309 kJ ∆E =176-10.309 kJ =165.69 kJ
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