2 g of NaOH per 250 ml of solution is added to a buffer solution of buffer capacity 0.2. Then the change in pH is

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0.5

1.5

2.0

answer is B.

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Detailed Solution

per 250 ml ,moles of NaOH addaed per 1000ml , moles of NaOHadded Given buffer capacity =0.2When 0.2 moles of OH- is added, PH changes by 1 unit

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