Ionic Equlibriu...

The conjugate acid of NH₂^- is

Out of the following, amphiprotic species are

I : HPO₃^2-

II OH^-

III H₂PO₄^-

IV HCO₃^-

pH of an aqueous solution of NaCl at 85°C should be

1 c.c. of 0.1N HCl is added to 99 CC solution of NaCl. The pH of the resulting solution will be

10 ml of  is mixed with 40 ml of . The pH of the resulting solution is

If pK_b for fluoride ion at 25°C is 10.83, the ionisation constant of hydrofluoric acid in water at this temperature is :

The pH of an aqueous solution of 1.0 M solution of a weak monoprotic acid which is 1% ionised is:

If K₁ & K₂ be first and second ionisation constant of H₃PO₄ and K₁ >> K₂ which is incorrect.

The degree of hydrolysis of a salt of weak acid and weak base in it's 0.1 M solution is found to be 50%. If the molarity of the solution is 0.2 M, the percentage hydrolysis of the salt should be

What is the percentage hydrolysis of NaCN in N/80 solution when the dissociation constant for HCN is 1.3 × 10^-9 and K_w = 1.0 × 10^-14