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Buffer Solutions

100ml of a bu...

Question

100ml of a buffer of $1 M N H_{3} (a q) a n d {1 M N H_{4}}^{+} (a q)$ are placed in two half cells separately. A current of 1.5amp is passed through both half cells for 20min, if electrolysis of only water take place. The pH of :

Anode half cell will decrease

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Cathode half cell will decrease

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Both half cell will decrease

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Both half cell remain same

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Solution

The correct option is A Anode half cell will decrease
As only the electrolysis of water take place so the conc. of $H^{+}$ ion in Anode compartment increases

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