Balance the following in acidic solution. (Omit states-of-matter from your answer. Use the lowest possible whole number coefficients.)

(a)

Ti + Cr2O7^2− → Ti^3+ + Cr^3+

Oxidation reaction:

Ti → Ti3+ + 3e-

Correct.

Reduction reaction:

Cr2O7^2- → Cr^3+

Your answer contains an ambiguous or incomplete reaction equation. Check all the components on the reactant-side of the equation. Check all the components on the product-side of the equation.

Net reaction:

2Ti + Cr2O7^2-→ 2Ti^3+ + 2Cr^3+

Your answer contains an ambiguous or incomplete reaction equation. Check all the components on the reactant-side of the equation. Check all the components on the product-side of the equation.

(b)

H2O2 + Mo^2+ → H2O + Mo^4+

Oxidation reaction:

Mo^2+ → Mo^4+ + 2e-

Correct.

Reduction reaction:

H2O2 → H2O

Your answer contains an ambiguous or incomplete reaction equation. Check all the components on the reactant-side of the equation.

Net reaction:

Mo^2+ + H2O2 → Mo^4+ + H2O

Your answer contains an ambiguous or incomplete reaction equation. Check all the components on the reactant-side of the equation.

(c)

Hg + SnO2 → Hg2^2+ + Sn^2+

Oxidation reaction:

Hg → Hg2^2+ + 2e-

Your answer contains an improperly or incompletely formatted chemical formula. Your answer is missing one or more subscripts or superscripts.

Reduction reaction:

SnO2 + 4H^+ +2e- → Sn^2+ + 2H2O

Your answer differs too much from the expected answer to provide useful feedback.

Net reaction:

Hg + SnO2+ +4H^+ → Hg^2+ + Sn^2+ + 2H2O

Your answer contains an ambiguous or incomplete reaction equation. Check all the components on the reactant-side of the equation. Check all the components on the product-side of the equation.