Equilibrium questions
1777 published questions with worked solutions.
- 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)?
- The p K_a of HCN is 9.30. The pH of a solution prepared by mixing 2.5 moles of KCN and 2.5 moles of HCN in water and making up...
- Which of the following will produce a buffer solution when mixed in equal volumes?
- The ionisation constant of an acid, K_a, is the measure of strength of an acid. The K_a values of acetic acid, hypochlorous acid...
- The pH of a sample of vinegar is 3.76. Calculate the concentration of hydrogen ion in it.
- 0.01 mole of lime (CaO) was dissolved in 100 cm^3 of water. Assuming the base is completely ionised in the solution, the pH of...
- NaOH(aq), HCl(aq) and NaCl(aq) concentration of each is 10^ -3 M. Their pH will be respectively
- pH of a solution of a strong acid is 5.0. What will be the pH of the solution obtained after diluting the given solution 100...
- The ionisation constant of acetic acid is 1.74 10^ -5 . The degree of dissociation of acetic acid in its 0.05 M solution and its...
- Ionisation constant of CH_3COOH is 1.7 10^ -5 and [ H^+ ] is 3.4 10^ -4 . Then, initial concentration of CH_3COOH molecules is
- The conjugate base of NH_2^- is
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