The solubility of Sr `(OH)_2` at 298 K is 19.23g/L of solution. Calculate the concentration of strontium and hydroxyl ions. What is its pH? (Atomic mass of Sr=87.6)

If 0.561 g of KOH is dissolved in water to give 200 mL of solution at 298K, calculate the concentrations of potassium, hydrogen and hydroxyl ions. What is its pH?

The solubility product of PbCl_2 is 1.68xx10^-6 at 298K. Calculate its solubility at this temperature.

Vapour pressure of pure water at 298 K is 23.8mmHg. 50g of urea is dissolved in 850g of water. Calculate the vapour pressure of water for this solution and its relative lowering.

The solubility of 'Ba(OH)_2. 8 H2O' in water at '288 K' is '5.6 g' per '100 g' of water. molality of the hydroxide ions in solution of 'Ba(OH), 8 H_2 O' at '288 K' [At. mass of 'Ba=137, O=16, H=1'

The ph value of a solution determines whether it is acidic, basic or neutral in nature.the concentration of hydrogen ion in the sample of a soft drink is 3.8xx10^-3 mol/l. calculate its pH. Also predict whether the above solution is acidic, basic or neutral.

When some sodium acetate is added to a solution of acetic acid, the concentration of unionised acetic acid increases. consider the equilibrium, AgCl(s) harr Ag^+(aq) + Cl^-(aq) The solubility AgCl is 1.06xx10^-5 mol//L at 298K. Find out its K_(sp) at this temperature.

200 cm^3 of aqueous solution of a protein contain 1.26g of protein. The osmotic pressure of solution at 300K is found to be 8.3xx10^(-2) bar. Calculate the molar mass of protein, (R=0.083 l bar K^(-1)mol^(-1)

Vapour pressure of chloroform (CHCl_3) and dichloro methane (CH_2Cl_2) at 298K are 200 mm and 415 mm of Hg respectively. Calculated the vapour pressure of solution prepared by mixing 24g of chloroform and 17g of dichloro methane at 298K [At. Mass: H-1, C-12, Cl-35.5]

What current would be required to deposit 1.00 m^(2) of chromium plate having a thickness of 0.052mm in 4.5h from a solution of H_(2)CrO_(4) ? The current efficiency is 74% and density of chromium is 7.19 g cm^(-3) . [Atomic mass of Cr= 52u]