- 1(current)
Q. No.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 |
 78%
Level 2: 60%+
NEET - 2023
Hints
Which composition will make the basic buffer?
| 1. | 100 mL of 0.1 M HCl+100 mL of 0.1 M NaOH |
| 2. | 50 mL of 0.1 M NaOH+25 mL of 0.1 M CH3COOH |
| 3. | 100 mL of 0.1 M CH3COOH+100 mL of 0.1 M NaOH |
| 4. | 100 mL of 0.1 M HCl+200 mL of 0.1 M NH4OH |
Subtopic: Â Buffer |
 66%
Level 2: 60%+
NEET - 2019
Hints
Subtopic: Â Buffer |
 68%
Level 2: 60%+
NEET - 2015
Hints
Links
The dissociation constant of a weak acid is \(1\times 10^{-4}\) in order to prepare a buffer solution with pH=5 the [salt]/ [Acid] ratio should be:
| 1. | 4 : 5 | 2. | 10 : 1 |
| 3. | 5 : 4 | 4. | 1 : 10 |
Subtopic: Â Buffer |
 74%
Level 2: 60%+
NEET - 2013
Hints
Buffer solutions have constant acidity and alkalinity because:
| 1. | these give unionized acid or base on reaction with added acid or alkali. |
| 2. | acid and alkali in these solutions are shielded from attack by other ions |
| 3. | they have large excess of H+ or OH- ions |
| 4. | they have fixed value of pH |
Subtopic: Â Buffer |
 57%
Level 3: 35%-60%
AIPMT - 2012
Hints
- 1(current)
Q. No.
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