In a common car battery, six identical cells each carry out the following reaction: Pb + PbO₂ + 2HSO₄^- + 2H⁺ $\rightarrow$ 2PbSO₄ + 2H₂O
For such a cell, E° is 2.04 V. Calculate $\Delta$ G° at 25°C.

Question

In a common car battery, six identical cells each carry out the following reaction: Pb + PbO₂ + 2HSO₄^- + 2H⁺

\rightarrow

2PbSO₄ + 2H₂O
For such a cell, E° is 2.04 V. Calculate

\Delta

G° at 25°C.

Quizplus · Accepted Answer

The formula for calculating ∆G° is ∆G°=-nFE°, where n is the number of electrons transferred and F is Faraday's constant (96,485 C/mol). In this case, n = 2 (from the balanced chemical equation) and E° = 2.04 V. Plugging these values into the formula, we get:
∆G° = -(2 mol)(96,485 C/mol)(2.04 V)=-394 kJ
Therefore, the correct answer is C.

In a Common Car Battery, Six Identical Cells Each Carry →\rightarrow→

In a Common Car Battery, Six Identical Cells Each Carry $\rightarrow$