In a hydrogen-oxygen fuel cell, gaseous hydrogen serves as the fuel, oxygen in the air as...

In a hydrogen-oxygen fuel cell, gaseous hydrogen serves as the fuel, oxygen in the air as the oxidizer, and the reaction product is water. Consider that flat plates of Pt are used as electrodes at 25°C and fuel and air are supplied at 1 atm. [20%] (a) Write the Nernst expression for each half-cell reaction. (b) What is the overall cell reaction? (c) Calculate the cell voltage, Ecell, given the above conditions. (d) Suppose that the supply of hydrogen and air were increased to 10 atm. How does this change the cell emf?

Expert Solution

queen_honey_blossom answered 2 years ago

A direct hydrogen fuel cell uses hydrogen and air (oxygen) to produce electricity, as we showed...

A direct hydrogen fuel cell uses hydrogen and air (oxygen) to produce electricity, as we showed in class. If you wanted a voltage of 2.2 V for your fuel cell device (which can be made of multiple cells), what mix of conversion and/or number of cells would you want to use? Remember: the voltage of cells in series adds up. There are a variety of possible answers.

A hydrogen-oxygen fuel cell is used in the space program to generate clean energy. Describe, in...

A hydrogen-oxygen fuel cell is used in the space program to generate clean energy. Describe, in detail, the principle and process of electrical energy generation from hydrogen-oxygen fuel cell. Also include in the discussion major advantages and limitations of such fuel cells.

a hydrogen-oxygen fuel cell is used in the space program to generate clean energy. Describe, in...

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A gaseous compound has a composition by mass of 29.8% carbon, 2.1% hydrogen, and oxygen. The...

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A flask contains a gaseous mixture of 3.01mol of hydrogen and 5.84mol of oxygen gases. When...

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Gaseous methane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water. Suppose...

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