Ionic Equilibrium Questions

The solubility of CdSO4 in water is 8.0 ×10–4 Å mol L–1. Its solubility in 0.01 M H2SO4 is ________(Round off to the nearest integer) (Assume that solubility is much less than 0.01 M)

Calculate the amount of NH4Cl in grams required to be dissolved in 500 ml water to have pH = 4.5 [kb for NH4OH = 1.8 × 10–5]

Which of the following has pH is equal to near about one

Calculate the pH of aqueous solution of 1.0 M HCOONH4 assuming complete dissociation (pKa of HCOOH = 3.8 and pKb of NH3 = 4.8) –

What amount of sodium propanoate should be added to one litre of an aqueous solution containing 0.02 mole of propanoic acid (Ka = 1.0 × 10–5 at 25ºC) to obtain a buffer solution of pH 6

The dissociation constant of weak acid HA is 4.9×10–8. After making the necessary approximations . Calculate pH in 0.1 M acid

A salt M₂X₃ dissolves in water such that its solubility is x g. mole/litre. Its Ksp is