Q.

Correct statements about the percentage ionization of weak acids in water include which of the following?

(P) The percentage ionization increases as the ionization constant of the acid becomes larger. 

(Q) The percentage ionization increases as the concentration of the acid becomes smaller

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a

P only

b

Q only

c

Both P and Q

d

Neither P nor Q

answer is C.

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Detailed Solution

By Ostwald's dilution law,

α=kac

When the value of temperature increases, then the value of degree of dissociation will increase.

The percentage ionization increases when the ionization constant of the acid becomes larger and concentration of the acid becomes smaller.

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