There Are Many Fuel Cell Systems, but One of the More

question 3

Multiple Choice

There are many fuel cell systems, but one of the more commonly studied is the Hydrogen/Oxygen fuel-cell, the two half reactions of which are shown below.
Reaction A 2 H₂ + 4 OH^- -----> 4 H₂O + 4 e^-
Reaction B O₂ + 2 H₂O + 4 e^- -----> 4 OH ^-
Which reaction takes place at the cathode?

• A) Reaction A
• B) Reaction B
• C) the reverse of Reaction A
• D) the reverse of Reaction B
• E) All of the above

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Definitions:

Fabs

fabs is a mathematical function in C that computes the absolute value of a floating-point number.

Common Logarithm

A logarithm with base 10, often used in scientific calculations.

Log10

Log10 refers to the logarithmic function with base 10, used to determine the power to which the base must be raised to obtain a given number.

Natural Logarithm

The logarithm to the base e, where e is an irrational constant approximately equal to 2.718.