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Question

If a salt bridge is not used between two half cells, what happens to the voltage?



A
Drops to zero
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B
Does not change
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C
Increases gradually
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D
Increases rapidly
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Solution

The correct option is B Drops to zero
The purpose of a salt bridge is not to move electrons from the electrolyte, rather maintain charge balance because the electrons are moving from one-half cell to the other. The electrons flow from the anode to the cathode thus if a salt bridge is removed between the half cells, the voltage becomes zero.

Hence, option A is correct.

Chemistry

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