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30 ml of 0.2 M NaOH is added with 50 ml 0.2 M solution. The extra volume of 0.2 M required to make the pH of the solution 5.00 is .The value of is. The ionisation constant of .
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The correct answer is:
3
Milli.moles of
m.m of
Now:

Suppose 'v'mL of is added then
m.mol of
m.mol of
So
So
m.m of
Now:

Suppose 'v'mL of is added then
m.mol of
m.mol of
So
So
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