In which of the following reactions, standard reaction entropy change (∆ S^{\circ}) is positive and standard Gibb's energy change (∆ G^{\circ}) decreases sharply with increasing temperature ?

Correct Answer is : C graphite +12O2(g)→CO(g)

C graphite +\frac{1}{2} {\O}_2( {\g}) \to {\CO}( {\g})

{\CO}( {\g})+\frac{1}{2} {\O}_2( {\g}) \to {\CO}_2( {\g})

{\Mg}( {\s})+\frac{1}{2} {\O}_2( {\g}) \to {\MgO}( {\s})

\frac{1}{2} {\C} graphite +\frac{1}{2} {\O}_2( {\g}) \to \frac{1}{2} {\CO}_2( {\g})

AIPMT 2012 Physics and Chemistry Paper

Question : 57 of 100

Marks: +1, -0

In which of the following reactions, standard reaction entropy change (∆S∘) is positive and standard Gibb's energy change (∆G∘) decreases sharply with increasing temperature ?

C graphite +‌
1
2
O2(g)→CO(g)
CO(g)+‌
1
2
O2(g)→CO2(g)
Mg(s)+‌
1
2
O2(g)→MgO(s)
‌
1
2
C graphite +‌
1
2
O2(g)→‌
1
2
CO2(g)

Validate

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