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AIPMT 2014 Physics and Chemistry Paper
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© examsnet.com
Question : 57
Total: 90
Which of the following statements is correct for the spontaneous adsorption of a gas ?
∆
S
is negative and, therefore,
∆
H
should be highly positive
∆
S
is negative and therefore,
∆
H
should be highly negative
∆
S
is positive and, therefore,
∆
H
should be negative
∆
S
is positive and, therefore,
∆
H
should also be highly positive
Validate
Solution:
During adsorption entropy decreases, so
∆
S
<
0
.
∆
G
=
∆
H
−
T
∆
S
For spontaneous adsorption
∆
G
<
0
so
∆
H
should be highly negative.
© examsnet.com
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