Q. No.If solubility product of is denoted by and its molar solubility is denoted by S, then which of the following relation between S and is correct ?
1.
2.
3.
4.
1.
For the following reactions, equilibrium constants are given below:
S(s) + O2(g) SO2(g); K1 = 1052
2S(s) + 3O2(g) 2SO3(g); K2 = 10129
The equilibrium constant for the reaction, 2SO2(g) + O2(g) 2SO3(g) is:
| 1. | 10154 | 2. | 10181 |
| 3. | 1025 | 4. | 1077 |
For the reaction, 2SO2(g) + O2(g) = 2SO3(g), H = –57.2 kJ mol–1 and KC = 1.7 × 1016 .
Which of the following statements is incorrect?
| 1. | The equilibrium will shift in the forward direction as the pressure increases. |
| 2. | The addition of inert gas at constant volume will not affect the equilibrium constant. |
| 3. | The equilibrium constant is large suggestive of the reaction going to completion and so no catalyst is required. |
| 4. | The equilibrium constant decreases as the temperature increases. |
Consider the following statements
| a. | The correct order of increasing acidic strength is CH4 < NH3 < HF < H2O. |
| b. | The ionic product of water is temperature dependent. |
| c. | A monobasic acid with Ka = 10–5 has a pH = 5. The degree of dissociation of this acid is 50%. |
The correct statements are:
1. (a) and (b)
2. (a), (b) and (c)
3. (a) and (c)
4. (b) and (c)
What is the molar solubility of aluminum hydroxide (Al(OH)3) in a 0.2 M sodium hydroxide (NaOH) solution?
[Given: Solubility product of Al(OH)3 is 2.4 × 10–24]
1. 3 × 10–22
2. 3 × 10–19
3. 12 × 10–21
4. 12 × 10–22
The molar solubility of Cd(OH)2 is 1.84 × 10–5 M in water. The expected solubility of Cd(OH)2 in a buffer solution of pH = 12 is:
| 1. | \(2.49 \times 10^{-10} M\) | 2. | \(1.84 \times 10^{-9} M\) |
| 3. | \(6.23 \times 10^{-11} M\) | 4. | \(1.49 \times 10^{-9} M\) |
| Assertion (A): | When Cu (II) and sulphide ions are mixed, they react together extremely quickly to give a solid. |
| Reason (R): | The equilibrium constant of Cu2+(aq) + S2- (aq) ⇋ CuS(s) is high because the solubility product is low. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are False. |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
An acidic buffer is obtained on mixing :
1. 100 mL of 0.1 M CH3COOH and 100 mL of 0.1 M NaOH.
2. 100 mL of 0.1 M HCl and 200 mL of 0.1 M NaCl.
3. 100 mL of 0.1 M HCl and 200 mL of 0.1 M CH3COONa.
4. 100 mL of 0.1 M CH3COOH and 200 mL of 0.1 M NaOH.
© 2026 GoodEd Technologies Pvt. Ltd.