Chemistry questions
29404 published questions with worked solutions.
- The concentration of sulphide ion in 0.1 M HCl solution saturated with hydrogen sulphide is 1.0 10^ -19 M. If 10 mL of this is...
- The solubility product of Ag_2CrO_4 is 32 10^ -12 . What is the concentration of CrO_4^ 2- ions in that solution?
- The solubility product of Al(OH)_3 is 2.7 10^ -11 . Its solubility in g ,L^ -1 and pH of this solution are respectively (Atomic...
- Calculate the volume of water required to dissolve 0.1 g lead (II) chloride to get a saturated solution. (K_ sp of PbCl_2 = 3.2...
- pH of following solution is not affected by dilution
- The pH of neutral water at 25 ^ is 7.0. As the temperature increases, ionisation of water increases, however, the concentration...
- What will be the pH and % respectively for the salt BA of 0.1 M concentration? Given, K_a for HA = 10^ -6 and K_b for BOH = 10^...
- K_a for CH_3COOH is 1.8 10^ -5 and K_b for NH_4OH is 1.8 10^ -5 . The pH of ammonium acetate will be
- An aqueous solution of sodium carbonate is alkaline because sodium carbonate is a salt of
- The aqueous solution of AlCl_3 is acidic due to the hydrolysis of
- To a 10 mL of 10^ -3 H_2SO_4 solution water has been added to make the total volume 1 L. Its pOH would be
- The pH of a solution formed by mixing equal volumes of two solutions, A and B of a strong acid having pH = 6 and pH = 4...
- pH of 0.08 mol ,dm^ -3 HOCl solution is 2.85. Calculate its ionisation constant.
- What will be the value of pH of 0.01 mol ,dm^ -3 CH_3COOH (K_a = 1.74 10^ -5 ) ?
- 0.5 M ammonium benzoate is hydrolysed to 0.25 per cent. Hence, its hydrolysis constant is
- A weak acid HX has the dissociation constant 1 10^ -5 M. It forms a salt NaX on reaction with alkali. The degree of hydrolysis of...
- The species which acts as a Lewis acid but not a Bronsted acid is
- Which of the following is the strongest conjugate base?
- Which of the following is a conjugated acid-base pair?
- How much sodium acetate should be added to 0.1 M solution of CH_3COOH to give a solution of pH = 5.5 ( p K_a of CH_3COOH = 4.5)?