(Solved): The Frost-Ebsworth diagrams of \( \mathrm{V} \) in aqueous solution at \( \mathrm{pH}=0 \) and at \ ...

The Frost-Ebsworth diagrams of \( \mathrm{V} \) in aqueous solution at \( \mathrm{pH}=0 \) and at \( \mathrm{pH}=14 \) are shown below: (vi) Write the balanced equations at \( \mathrm{pH}=14 \) for the reduction of \( \mathrm{VO}_{4}{ }^{3-} \) to \( \mathrm{HV}_{2} \mathrm{O}_{5} \) and from \( \mathrm{HV}_{2} \mathrm{O}_{5}^{-} \)to \( \mathrm{V}_{2} \mathrm{O}_{3} \) \( [6 m a \) (vii) Which of the following reactions are spontaneous at \( \mathrm{pH}=0 \) ? Explain your reasons. Oxidation from \( \mathrm{V}^{2+} \) to \( \mathrm{V}^{3+} \) at \( \mathrm{pH} 14 \) Oxidation from \( \mathrm{V}^{4+} \) to \( \mathrm{V}^{5+} \) at \( \mathrm{pH}=0 \); Reduction from \( \mathrm{V}^{4+} \) to \( \mathrm{V}^{3+} \) at \( \mathrm{pH}=14 \); Reduction from \( \mathrm{V}^{2+} \) to \( \mathrm{V} \) at \( \mathrm{pH}=0 \). Page 3 of 5