If in a Lead Storage Battery the Reaction at the Cathode

question 104

Multiple Choice

If in a lead storage battery the reaction at the cathode is:
PbO₂(s) + 4 H⁺(aq) + SO₄^2- (aq) + 2 e^- → PbSO₄(s) + 2 H₂O(l)
How many grams of lead sulfate are formed on one plate if 20.A average current occurs for 2.0 minutes? Assume 100% efficiency.

• A)0.063 g
• B)0.13 g
• C)3.8 g
• D)7.5 g
• E)requires additional information

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