NCERT Class XI Chemistry Thermodynamics Solutions
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Question : 6
Total: 22
A reaction, A + B → C + D + q is found to have a positive entropy change.
The reaction will be
(a) possible at high temperature
(b) possible only at low temperature
(c) not possible at any temperature
(d) possible at any temperature.
The reaction will be
(a) possible at high temperature
(b) possible only at low temperature
(c) not possible at any temperature
(d) possible at any temperature.
Solution:
(d) : A + B → C + D + q, ΔS = +ve
Here, ΔH = –ve; ΔG = ΔH – TΔS
For reaction to be spontaneous, ΔG should be –ve.
As ΔH = –ve and ΔS is +ve, ΔG will be –ve at any temperature.
Here, ΔH = –ve; ΔG = ΔH – TΔS
For reaction to be spontaneous, ΔG should be –ve.
As ΔH = –ve and ΔS is +ve, ΔG will be –ve at any temperature.
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