The pH of a 0.1 molar solution of the acid HQ is 3. The value of the ionization constant, K_a of this acid is

The pH of a 0.1 molar solution of the acid HQ is 3. The value of the i

1.	The pH of a 0.1 molar solution of the acid HQ is 3. The value of the ionization constant, K_a of this acid is
Answer» `1XX10^(-3)` `1xx10^(-5)` `1xx10^(-7)` `3xx10^(-1)` SOLUTION :PH=3 MOLARITY = 0.1 M `[H^+]=sqrt(K_a C)` `H^(+) =10^(-pH)=10^(-3)` `10^(-3) = sqrt(K_axx0.1)` or `10^(-6) =K_a xx0.1` `therefore K_a=10^(-5)`