If the pH of 0.1 M NaCN solution is 11, then the percentage hydrolysis will be:
1. 0.1%
2. 1%
3. 0.01%
4. 10%
How much water should be added to 400 mL of HCI solution in order to raise the pH by one unit?
1. | 360 mL | 2. | 1000 mL |
3. | 600 mL | 4. | 3600 mL |
In the reaction A(g) + 2B(g) ⇌ 2C(g) + D(g), the initial concentration of B is twice that of A and, at equilibrium, the concentrations of A and D are equal. The value of the equilibrium constant will be:
1. | 4 | 2. | 16 |
3. | 2 | 4. | 1 |
The degree of hydrolysis of the salt is independent of the concentration of a solution:
1. NH4CI
2. NH4CN
3. (NH4)2SO4
4. All of the above
The dissociation of solid in a closed container produces a pressure of 4 atm at , then for the reaction will be:
1. | 4 | 2. | 8 |
3. | 16 | 4. | 5 |
The number of ions present in 1 ml of a solution whose pH= 4 , is given as:
( )
1.
2.
3.
4.
If the pH of an acidic buffer is 5.7 and is 5 then the ratio of will be:
1. | 3 | 2. | 4 |
3. | 5 | 4. | 6 |
On adding NH4CI to an NH4OH solution, the pH of the solution will
1. | Increase | 2. | Decrease |
3. | Remain the same | 4. | Either increase or decrease |
Assertion (A): | A catalyst does not influence the values of the equilibrium constant. |
Reason (R): | The catalyst affects the rate of both forward and reverse reactions equally. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
Assertion (A): | The reaction for which ∆n=0 there is no effect of pressure on equilibrium. |
Reason (R): | A change in pressure results in no change in the value of the equilibrium constant. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |