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प्रश्न
Assertion (A): An aqueous solution of ammonium acetate can act as a buffer.
Reason (R): Acetic acid is a weak acid and \[\ce{NH4OH}\] is a weak base.
विकल्प
Both A and R are true and R is correct explanation of A.
Both A and R are true but R is not correct explanation of A.
A is false but R is true.
Both A and R are false.
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उत्तर
A is false but R is true.
Explanation:
Salt of weak acid and weak base can form buffer solution.
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संबंधित प्रश्न
Answer the following in one sentence :
Classify the following buffers into different types :
CH3COOH + CH3COONa
The pKb of weak base BOH [Kb(BOH) = 1 × 10-5] will be ______.
Name the buffer which is used to maintained pH of 8 to 10 for precipitation of cations III A group in qualitative analysis.
Explain the types of buffer solutions.
Write one application of the following buffer:
`"HCO"_3^- + "H"_2"CO"_3`
Veronal is used as a/an ______.
What is the pH of 0.5 litre buffer solution containing 0.01 mole of CH3COOH and 0.01 mole of CH3COONa?
[pKa of acid = 4.74]
The dissociation constant of a weak acid is 1 × 10−3. In order to prepare a buffer solution with a pH = 4, the `(["Acid"])/(["Salt"])` ratio should be ____________.
On the basis of the equation \[\ce{pH}\] = – log \[\ce{[H+]}\], the \[\ce{pH}\] of 10–8 mol dm–3 solution of \[\ce{HCl}\] should be 8. However, it is observed to be less than 7.0. Explain the reason.
Calculate the pH of buffer solution composed of 0.01 M weak base BOH and 0.02 M of its salt BA. [Kb = 1.8 × 10–5 for weak base]
Write any four applications of buffer solution.
Calculate pKa of HF if Ka= 7.2 x 10-4.
Explain the types of buffers with example.
What is the pH of buffer solution formed by mixing 0.01 M acetic acid and 0.05 M sodium acetate? (pKa = 4.7447)
What is the pH of buffer solution prepared by mixing \[\text{0.2MNH4OHand0.4MNH4Cl}\] solution. \[(\mathrm{pK_{b}~of~NH_{4}OH=4.620})\]
A buffer solution is prepared by mixing 0.1 M ammonia solution and 0.25 M solution of NH4CI. What is the value of pKb to maintain its pOH at 6?
A buffer solution is prepared by mixing 0.01 М HCN and 0.02 M sodium cyanide. If pKa for HCN is 5.20, what is the pH of solution?
