6. Chemical Quantities & Aqueous Reactions

Which of the following is the balanced redox reaction for IO3⁻(aq) + H2SO3(aq) → I2(aq) + SO4²⁻(aq) in an acidic solution?

A 10.00-mL sample of a 0.130 M H₃PO₄ solution is added to 13.00 mL of a 0.150 M Ba(OH)₂ solution. When the reaction is complete, what spectator ions are present?

2 H₃PO₄ (aq) + 3 Ba(OH)₂ (aq) → Ba₃(PO₄)₂ (s) + 6 H₂O (l)

What is the balanced half-reaction for the oxidation occurring at the anode in the galvanic cell: Co(s) | Co2+(aq) || Cu2+(aq) | Cu(s) in an acidic solution?