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Q.

10-2 mole of NaOH was added to 10 liters of water. The pH will change by

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a

4

b

3

c

11

d

7

answer is A.

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Detailed Solution

pHof water before adding base = 7 because water is neutral.New OH- =10-2 × 110 = 10-3New pH = 11Change in pH = 11 - 7 = 4

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10-2 mole of NaOH was added to 10 liters of water. The pH will change by