He then takes a powerful magnet and positions it below the table and the keys. He finds that he is able to drag the keys along t
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<u>Answer:</u> The correct answer is
<u>Explanation:</u>
We are given:
The substance having highest positive potential will always get reduced and will undergo reduction reaction. Here, silver will always undergo reduction reaction will get reduced.
Chromium will undergo oxidation reaction and will get oxidized.
The half reactions for the above cell is:
Oxidation half reaction:
Reduction half reaction: ( × 3)
Net equation:
Oxidation reaction occurs at anode and reduction reaction occurs at cathode.
To calculate the of the reaction, we use the equation:
Putting values in above equation, we get:
Hence, the correct answer is