Ncert Exercises & Solutions

Match Column I with Column II and mark the appropriate option:

Column I (Term)	Column II (Conditions)
(A). Equilibrium	(i). $∆ G > 0, K < 1$
(B). Spontaneous reaction	(ii). $∆ G = 0$
(C). Non-spontaneous reaction	(iii). $∆ G < 0, K > 1$

Codes:

Options:	A	B	C
1.	(ii)	(iii)	(i)
2.	(i)	(ii)	(iii)
3.	(ii)	(i)	(iii)
4.	(iii)	(i)	(ii)

Hint: The relation between ∆_rG^o and K is ∆_rG^o= – RT ln K

∆ G

is 0, the reaction has achieved equilibrium: at this point, there is no longer any free energy left to drive the reaction.

B. If

∆ G < 0

, then K>1 which implies a spontaneous reaction or the reaction which proceeds in the forward direction to such an extent that the products are present predominantly.

C. If

∆ G > 0

, then K<1, which implies a non-spontaneous reaction or a reaction that proceeds in the forward direction to such a small degree that only a very minute quantity of product is formed.

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