Q.

In the experiment set up for the measurement of EMF of a half cell using a reference electrode and a salt bridge, when the salt bridge is removed, the voltage

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a

Decreases to half the value 

b

Drops to zero 

c

Increase to maximum 

d

Does not change

answer is D.

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Detailed Solution

  • It connect two solutions and completes the circuit.
  • If you remove the salt bridge, the circuit of the voltaic cell will be cut and the voltage will go to zero instantly.
  • Opening or cutting the circuit by removing the salt bridge stops all Galvanic chemical reactions instantly. 
  • There will be no 'stop working after some time', the cell will cease to operate the instant the circuit is cut.
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