Question

11. For the reversible reaction , A (s) + B (g) = C (g) + D (g) , Change in gibbs free energy is -350 kJ, Which of the following statement is true? *

2 points

The reaction is thermodynamically non-feasible

The entropy Change is negative

Equilibrium Constant is greater than one

The reaction should be instantaneous

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Answer 1

Answer:

I think the option 1 is right

Answer 2

Answer :

In the reversible reaction,

Since, the randomness increases (because solid is changing into gas), entropy will increase and thus, is positive. Reversible reaction never undergo to completion.

$\triangle G \degree= - RT \: log \\ - 350 \: = - RT \: log \: K$

K (equilibrium constant) is greater than one.

And ,the reaction is thermodynamically feasible.

So, the answer is Option C) Equilibrium constant is greater than one