1.

For the following reaction occuring in dilute aqueous solution at 298K. [Ni(H_(2)O)_(6)]^(2+) +2NH_(3) hArr [Ni(NH_(3))_(2)(H_(2)O)_(4)]^(2+)+2H_(2)O ""…….(i) In K_(c)=11.60 and DeltaH^(@)=-33.5 KJ"mol"^(-1) [Ni(H_(2)O)_(6)]^(2+) +en hArr[NI(en)(H_(2)O)_(4)]^(2+) + 2H_(2)O "".......(ii) InK_(c) =17.78and DeltaH^(@)=-37.2 KJ "mol"^(-1) Note : en is ethylenediamine (a neutral bidentate ligand) (R=8.314510 JK-1 "mol"^(-1)=0.0820584 L atm K_(1)"mol"^(-1)) Calculate the value of DeltaG^(@), DeltaS^(@) and DeltaS^(@) . at 298 K for reaction(iii) occuring in a dilute equeous solution: [Ni(NH_(3))_(2) (H_(2)O)_(4)]^(2+)+ en hArr [Ni(en) (H_(2)O)_(4)]^(2+) + 2NH_(3) ""........(iii)

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SOLUTION :N//A


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