In a hydrogen fuel cell, the steps of the chemical

Chapter 5, Problem 4P

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QUESTION: In a hydrogen fuel cell, the steps of the chemical reaction are

\(\begin{array}{l}\text{at - electrode: } \mathrm{H}_{2}+2 \mathrm{OH}^{-} \longrightarrow 2 \mathrm{H}_{2} \mathrm{O}+2 \mathrm{e}^{-} \text{;}\\ \text{at + electrode: } \frac{1}{2} \mathrm{O}_{2}+\mathrm{H}_{2} \mathrm{O}+2 \mathrm{e}^{-} \longrightarrow 2 \mathrm{OH}^{-} \text{.}\end{array}\)

Calculate the voltage of the cell. What is the minimum voltage required for electrolysis of water? Explain briefly.

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QUESTION: In a hydrogen fuel cell, the steps of the chemical reaction are

\(\begin{array}{l}\text{at - electrode: } \mathrm{H}_{2}+2 \mathrm{OH}^{-} \longrightarrow 2 \mathrm{H}_{2} \mathrm{O}+2 \mathrm{e}^{-} \text{;}\\ \text{at + electrode: } \frac{1}{2} \mathrm{O}_{2}+\mathrm{H}_{2} \mathrm{O}+2 \mathrm{e}^{-} \longrightarrow 2 \mathrm{OH}^{-} \text{.}\end{array}\)

Calculate the voltage of the cell. What is the minimum voltage required for electrolysis of water? Explain briefly.

ANSWER:

Step 1 of 4

In a hydrogen fuel cell, the steps of the chemical reaction are

The overall reaction is,

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