Question 1
Determine the number of water molecules necessary to balance the following chemical equation.
Cr2O72-(aq) + Cl-(aq) + H+(aq) → Cr3+(aq) + Cl2(g) + ________ H2O(l)
◦ 14
◦ 5
◦ 3
◦ 7
Question 2
Determine the number of water molecules necessary to balance the reduction half reaction of

that occurs in a basic solution.
◦ 5
◦ 3
◦ 2
◦ 4