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Calculate the change in pH of 1 litre bu...

Calculate the change in pH of 1 litre buffer solution containing `0.1` mole each of `NH_(3)` and `NH_(4)CI` upon addition of:
(i) `0.02` mole of dissolved gasous HCI.
(ii) `0.02` mole of dissolved of NaOH.
Assume no change in volume. `K_(NH_(3))=1.8xx10^(-5)`

Text Solution

Verified by Experts

pH = `9.2553`
(a) Change in pH = `0.1761 ` unit , i.e ., pH decreases
(b) Change in pH = `0.1761 ` unit i.e ., pH increases
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