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Question

For a reaction, AP, the plots of [A] and [P] with time at temperature T1 and T2 are given below.
If T2>T1, the correct statement(s) is/are:
(Assume Hθ and Sθ are independent of temperature and ratio of lnK at T1 to lnK at T2 is greater than T2T1. Here H,S,G and K are enthalpy, entropy, Gibbs energy and equilibrium constant, respectively.)
903649_55a5a876388a4543b77febaa2ea537a1.png

A
Hθ<0,Sθ<0
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B
Gθ<0,Hθ>0
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C
Gθ<0,Sθ<0
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D
Gθ<0,Sθ>0
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Solution

The correct options are
A Hθ<0,Sθ<0
C Gθ<0,Sθ<0
AP

given T2>T1

lnK1lnK2>T2T1

T1 lnK1>T2 lnK2

G1>G2

(H+T1S)>(H+T2S)

T1S>T2S
S<0.

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