- 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 |
 89%
From NCERT
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NEET 2025 - Target Batch
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Which combination of the following substances will result in the formation of an acidic buffer when mixed?
| 1. | Weak acid and it's salt with a strong base. |
| 2. | Equal volumes of equimolar solutions of weak acid and weak base. |
| 3. | Strong acid and its salt with a strong base. |
| 4. | Strong acid and its salt with a weak base. (The pKa of acid = pKb of the base) |
Subtopic: Â Buffer |
 76%
From NCERT
NEET - 2023
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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 |
 60%
From NCERT
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| 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 |
 53%
From NCERT
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What volume of 0.10 M sodium formate solution should be added to 50 mL of 0.05 M formic acid to produce a buffer solution of pH = 4.0 (pKa of formic acid = 3.8 and 100.2 = 1.585)?
| 1. | 36.7 mL | 2. | 39.62 mL |
| 3. | 41 .67 mL | 4. | 43.5 mL |
Subtopic: Â Buffer |
 75%
From NCERT
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