d and f BLOCK ELEMENTS

What is the coefficient of H+ in the balanced equation for the overall reaction between dichromate and iron(II)?

• 2
• 6
• 7
• 14

What is the coefficient of Sn^2+ in the balanced half-reaction for its oxidation by dichromate?

• 1
• 2
• 3
• 6

What is the coefficient of I- in the balanced half-reaction for its oxidation by dichromate?

• 1
• 2
• 3
• 6

What is the total number of electrons lost in the half-reaction 3 Sn^2+ -> 3Sn^4+ + 6 e–?

• 2
• 3
• 6
• 12

What is the change in the oxidation state of tin in the reaction where Sn^2+ is oxidized to Sn^4+?

• -2
• +1
• +2
• +3