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1- Comment on the equilibrium constants in the following two reactions (remember: en= H2N(CH2)2NH2). Cd2+(aq) +...

1- Comment on the equilibrium constants in the following two reactions (remember: en= H2N(CH2)2NH2).

Cd2+(aq) + 4NH3(aq) «[ Cd(NH3)4]2+(aq)     log K1= 7.02

Cd2+(aq) + 2en (aq) «[ Cd(en)2]2+(aq).     Log K2= 10.30

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Answer #1

Higher value of log K represents that the equilibrium is favoured in the forward direction, more amount of product is formed in the reaction and formed product is more stable.

on observing the above equilibrium reactions, ,

Cd2+(aq) + 4NH3(aq) <---------->[ Cd(NH3)4]2+(aq)     log K1= 7.02

Cd2+(aq) + 2en (aq) <-------------->[ Cd(en)2]2+(aq).     Log K2= 10.30

log K1 < log K2 i.e the second equilibrium reaction is more favourable in the forward direction and the product more stable than the product in the first equilibrium reaction.

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