2Cr(s) + 3Cd2+(aq) → 2Cr3+(aq) + 3Cd

E⊝Cr3+/Cr= -0.74 V; E⊝Cd2+/Cd=-0.40 V

The value of ∆Gro in the above reaction will be-

1. -196.83 kJ

2. 196.83 kJ

3. 186.83 kJ

4. -186.83 kJ

Subtopic:  Relation between Emf, G, Kc & pH |
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Level 2: 60%+
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The value of  ∆G°  in the reaction below would be:
\(\small{\mathrm{Zn}(\mathrm{s})+\mathrm{Ag}_2 \mathrm{O}(\mathrm{s})+\mathrm{H}_2 \mathrm{O}(\mathrm{l}) \rightarrow \mathrm{Zn}^{+2}(\mathrm{aq})+2 \mathrm{Ag}(\mathrm{s})+2 \mathrm{OH}^{-}(\mathrm{aq})}\)


Given: \(E_{cell}^{\circ} = 1.04V\)

1. –2.13 kJ

2. –21.3 kJ

3. –201 kJ

4. –31.12 kJ

Subtopic:  Relation between Emf, G, Kc & pH |
 80%
Level 1: 80%+
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