Ionic Equlibriu...

The range of most suitable indicator which should be used for titration of X ^- Na⁺ (0.1 M, 10 ml) with 0.1 M HCl should be ( Given : k_b(X^-) = 10^-6 )

How many gm of solid NaOH must be added to 100 ml of a buffer solution which is 0.1 M each w.r.t. Acid HA and salt Na⁺ A^- to make the pH of solution 5.5. Given pK_a(HA) = 5 (Use antilog (0.5)= 3.16)

The solubility of A₂X₃ is y mol dm^-3. Its solubility product is

If K_sp for HgSO₄ is 6.4 × 10^-5, then solubility of this substance in mole per m³ is

Which of the following in most soluble in water ?

1 M NaCl and 1 M HCl are present in an aqueous solution. The solution is

The pK_a of a weak acid (HA) is 4.5. The pOH of an aqueous buffered solution of HA in which 50% of the acid is ionized is:

The precipitate of CaF₂ (K_sp = 1.7 × 10^-10) is obtained when equal volumes of the following are mixed

pH of saturated solution of silver salt of monobasic acid HA is found to be 9.

Find the K_sp of sparingly soluble salt Ag A(s).

Given : K_a(HA) = 10^-10

When equal volumes of the following solutions are mixed, precipitation of AgCl (K_sp = 1.8 × 10^-10) will occur only with: