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 |
Vapour density of when heated to becomes 24.5. its degree of dissociation at this temperature is
1. 80%
2. 87.75%
3. 40.34%
4. 60%
For the equilibrium SO2CI2(g) ⇌ SO2(g) + CI2(g) volume is increased.
When the equilibrium is re-established then
1. amount of SO2(g) will decrease
2. amount of SO2CI2(g) will increase
3. amount of CI2(g) will increase
4. amount of CI2(g) will remain unchanged
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 |
for 22% dissociation what would be the value of equilibrium constant?
1. 0.04
2. 0.0198
3. 0.5
4. 1.2527
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 |