In a hydrogen-oxygen fuel cell, combustion of hydrogen occurs to:

generate heat

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create potential difference between the two electrodes

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produce high purity water

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remove absorbed oxygen from electrode surfaces

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Solution

The correct option is D create potential difference between the two electrodes
In a fuel cell, the combustion of hydrogen occurs to generate electricity. This is achieved by creating a potential difference between the electrodes. Hence option B is the right answer.

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Can I say that standard electrode potential of any metal electrode is equal to the potential difference or e.m.f between that metal electrode and hydrogen electrode at standard conditions ?

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Q. Assertion :The absolute value of the electrode potential cannot be determined experimentally Reason: The electrode potentials are generally determined with respect to standard hydrogen electrodes.

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State True or False.

The negative sign of the reduction potential indicates that reduction occurs at that electrode when connected to standard hydrogen electrode.

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In a hydrogen-oxygen fuel cell, combustion of hydrogen occurs to:

The correct option is D create potential difference between the two electrodesIn a fuel cell, the combustion of hydrogen occurs to generate electricity. This is achieved by creating a potential difference between the electrodes. Hence option B is the right answer.

The correct option is D create potential difference between the two electrodes
In a fuel cell, the combustion of hydrogen occurs to generate electricity. This is achieved by creating a potential difference between the electrodes. Hence option B is the right answer.