Question

25. For a gaseous reaction.
A(g) + 3B[g) - 3C(g) + 3D(g)
A Eis 17 Kcal at 27°C assuming R-2 cal K'mol
the value of AH for the above reaction is:
(1) 15.8 kcal
(2) 18.2 Kcal
(3) 20.0 Kcal
(4) 16.4 Kcal​

Answer 1

Explanation:

wkt U =Q+W

given U=17kcal

W=nRT=(3+3-3-1)*2*300=1.2kcal

hence Q=17-1.2=15.8kcal

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