- 1(current)
Q. No.Given below are two statements:
| Assertion (A): | A solution containing a mixture of acetic acid and sodium acetate maintains a constant value of pH on the addition of small amounts of acid or alkali. |
| Reason (R): | A solution containing a mixture of acetic acid and sodium acetate acts as a buffer solution. |
| 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. | (A) is False but (R) is True. |
Subtopic: Â Buffer |
 91%
Level 1: 80%+
Hints
Links
| Assertion (A): | An aqueous solution of ammonium acetate can act as a buffer. |
| Reason (R): | Acetic acid is a weak acid and NH4OH is a weak base. |
| 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. | (A) is False but (R) is True. |
Subtopic: Â Buffer |
 55%
Level 3: 35%-60%
Hints
Links
The mixture that will produce a buffer solution when mixed in equal volumes is:
| 1. | 0.1 mol dm-3 NH4OH and 0.1 mol dm-3 HCl |
| 2. | 0.05 mol dm-3 NH4OH and 0.1 mol dm-3 HCl |
| 3. | 0.1 mol dm-3 NH4OH and 0.05 mol dm-3 HCl |
| 4. | 0.1 mol dm-3 CH3COONa and 0.1 mol dm-3 NaOH |
Subtopic: Â Buffer |
 61%
Level 2: 60%+
Hints
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- 1(current)
Q. No.
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