- 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: Buffer |
90%
From NCERT
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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: Buffer |
78%
From NCERT
NEET - 2023
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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
1. 4 : 5
2. 10 : 1
3. 5 : 4
4. 1 : 10
Subtopic: Buffer |
74%
From NCERT
NEET - 2013
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A buffer solution is prepared in which the concentration of NH3 is 0.30 M and the concentration of is 0.20 M. If the equilibrium constant, Kb for NH3 equals 1.8×10–5, then what is the pH of this solution?
(log 1.8 = 0.25; log 0.67 = –0.176)
1. 9.43
2. 11.72
3. 8.73
4. 9.08
Subtopic: Buffer |
66%
From NCERT
AIPMT - 2011
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Q. No.
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