Chemical Thermodynamics Question 14
Question: When enthalpy and entropy change for a chemical reaction are $ -2.5,\times 10^{3},cal $ and $ 7.4,cal $
$ {{\deg }^{-1}} $ respectively. Predict the reaction at $ 298,K $ is [AFMC 1998; MH CET 1999; CBSE PMT 2000]
Options:
A) Spontaneous
B) Reversible
C) Irreversible
D) Non-spontaneous
Show Answer
Answer:
Correct Answer: A
Solution:
When $ \Delta H $ = -ve, $ \Delta S $ = +ve and $ \Delta G $ = -ve than reaction is spontaneous .
