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. |
Assertion (A): | For a reaction, the concentration quotient (Q) is equal to K when the reaction is in equilibrium. |
Reason (R): | If a catalyst is added to the reaction at equilibrium, the value of Q remains unchanged and is no longer equal to K. |
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: The equilibrium constant of a reaction changes by changing the stoichiometric coefficients of the reaction.
Reason: The reaction,
and have the same equilibrium constant.
1. Both assertion & reason are true and the reason is the correct explanation of the assertion.
2. Both assertion & reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is a true statement but the reason is false.
4. Both assertion and reason are false statements.
Assertion (A): | The aqueous solution of \(CH_3COONa\) is alkaline in nature. |
Reason (R): | Sodium acetate undergoes cationic hydrolysis. |
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: At equilibrium,
Reason: When the reaction mainly goes in the forward direction.
1. | Both assertion & reason are true and the reason is the correct explanation of the assertion. |
2. | Both assertion & reason are true but the reason is not the correct explanation of the assertion. |
3. | Assertion is a true statement but the reason is false. |
4. | Both assertion and reason are false statements. |
Assertion: acts as both Bronsted Lowry base as well as Lewis base.
Reason: It acts as both acceptor and a lone pair donor.
1. Both assertion & reason are true and the reason is the correct explanation of the assertion.
2. Both assertion & reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is a true statement but the reason is false.
4. Both assertion and reason are false statements.