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Q.

The pH of a weak monobasic acid is 3. It is diluted by 100 times, its pH of resulting solution will be

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a

4

b

5

c

6

d

2

answer is A.

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Detailed Solution

PH of a weak acid solution is given as,PH=12PKa-logC0Initially the PH =3⇒3=12PKa-logC0→(1)After dilution,PH=12PKa-logC0102→(2)(1)-(2)⇒3-PH=12PKa-logC0102PH = 4
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The pH of a weak monobasic acid is 3. It is diluted by 100 times, its pH of resulting solution will be