`K_(a)` values for HA,HB and HD are `10^(-5), 10^(-7)` and `10^(-9)` respectively. Which of the following will be correct for decimolar aqueous solutions of `NaA, NaB` , and NaD at `25^(@)C` ?

K_a values for Ha,HB and HD are 10 ^(-5) ,10 ^(-7) and 10 ^(-9) respectively . Whch of the following will be correct for decimolar aqueous solution of NaA, NaB and NaD at 25^(@) C ?

The pH of 10^(-7) HCl aqueous solution of HCl at 25^(@)C is :

The enthalpies of neutralization to two weak acids HA and HB with NaOH are -10.1 and -11.8 Kcal//g . eq respectively. Which of the following relation is correct regarding acidic strengths of HA and HB :-

The enthalpies of neutralization to two weak acids HA and HB with NaOH are -10.1 and -11.8 Kcal//g . eq respectively. Which of the following relation is correct regarding acidic strengths of HA and HB :-

The dissociation constant of monobasic acids A, B,C and D are 6 xx 10^(-4),5xx10^(-5), 3.6 xx 10^(-6) , and 7 xx 10^(-10) , respectively. The pH values of their 0.1M aqueous solutions are in the order.

K_(a) of the weak acids HA and HB at 298 K are 1.6 times 10^(-5) and 6.4 times 10^(-5) respectively. The ratio of the acid strengths of the two in their aq. Solutions of the same concentration is

Sodium salts of three monobasic acids, HA, HB and HC are HaA, NaB and NaC, respectively. The concentration of each of the aqueous solution of the aqueous solution of these salts is 0.1(M) and the pH of their solutions are 7,9 and 10, respectively. Among HA, HB and HC, which is (are) strong acid(s)?