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Q.

To change the pH of a solution from 1 to 1.301 which of the following should be adopted ?

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a

1 lit of water is to be added

b

1 kg of water is to be added

c

The volume of the solution should be doubled by adding water

d

The weight of the solute present in the solution should be doubled

answer is C.

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Detailed Solution

PHi=1;H+i=10-1⇒nVi=10-1 PfH=1.3;H+f=5×10-2⇒nVf=5×10-2 ∴VfVi=10-15×10-2=105=2
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