It is noticed that ${Pb}^{2 +}$ is more stable than ${Pb}^{2 +}$ but ${Sn}^{2 +}$ is less stable than ${Sn}^{4 +}$. Observe the following reactions

Question

It is noticed that ${Pb}^{2 +}$ is more stable than ${Pb}^{2 +}$ but ${Sn}^{2 +}$ is less stable than ${Sn}^{4 +}$. Observe the following reactionsPbO2+Pb→2PbO;ΔrG∘(1) SnO2+Sn→2SnO;ΔrG∘(2)

Accepted Answer

${PbO}_{2} + Pb \rightarrow 2PbO$${Pb}^{2 +}$ is more stable hence reaction will be spontaneous. So $\Delta G^{\circ}\ _{r}(1)$ is negative.$${SnO}_{2} + Sn \rightarrow 2SnO $$${Sn}^{+ 2}$ is less stable, so reaction will be nonspontaneous hance $\Delta G^{\circ}\ _{r}(2)$ is positive.

Question

Options

Solution

More Metallurgy Questions