Consider the titration of samples solutions of \(\sim 0.1\mathrm{M} \mathrm{Sn}^{2+}\) in \(0.5 \mathrm{M} \mathrm{H}_{2} \mathrm{SO}_{4}\) solution using \(0.1 \mathrm{M} \mathrm{Cr}_{2} \mathrm{O}_{7}{ }^{2-}\) titrant in \(0.5 \mathrm{M} \mathrm{H}_{2} \mathrm{SO}_{4}\).

(a) What would the equivalence point potential be (neglecting the effect of activity coefficients and any junction potential)?

(b) What would the equivalence point potential be if the sulfuric acid concentration were \(0.05 \mathrm{M}\) and all other conditions were the same (neglecting the effect of activity coefficients and any junction potential)?