MCQs on Law of Equilibrium and Equilibrium Constant

MCQs on Law of Equilibrium and Equilibrium Constant

1. Could BF₃ acidity be clarified using one of the following concepts?

1. Arrhenius concept
2. Bronsted Lowry concept
3. Lewis concept
4. Bronsted Lowry as well as Lewis concept

Answer: (c)

2. What will be the value of pH of 0.01 mol dm^-3 CH₃COOH (Ka = 1.74 x 10^-5)?

1. 3.4
2. 3.6
3. 3.9
4. 3.0

Answer: (a)

3. Which of the following options will be correct for the stage of half completion of the reaction A ⇌ B?

1. G^o = 0
2. G^o > 0
3. G^o < 0
4. G^o = – RT ln 2

Answer: (a)

4. What should be the correct order of the gas, acetone and ether vapour concentration at 30℃. Considering that water has a maximum boiling point among these compounds, and that ether has a minimum boiling point?

1. water > ether > acetone
2. water < acetone < ether
3. ether < acetone < water
4. acetone < ether < water

Answer: (b)

5. What is the pH of the resulting solution when equal volumes of 0.1M NaOH and 0.01M HCl are mixed?

1. 7.0
2. 1.04
3. 12.05
4. 2.0

Answer: (c)

6. Which one of the following species cannot act as both Bronsted acid and base?

1. H₂O
2. HCO₃^–
3. HSO₄^–
4. NH₂^–

Answer: (d)

7. Which of the following salts will give the highest pH in the water?

1. KCl
2. NaCl
3. Na₂CO₃
4. CuSO₄

Answer: (c)

8. The aqueous solution of NH₄Cl is

1. alkaline
2. acidic
3. neutral
4. none of these

Answer: (b)

9. For acidic solution

1. pH = 7
2. pH < 7
3. pH > 7
4. None of these

Answer: (b)

10. The oxidation number of Cr in K₂CrO₄ is

1. +6
2. -6
3. +8
4. -8

Answer: (a)