Advertisements
Advertisements
प्रश्न
Which of the following will produce a buffer solution when mixed in equal volumes?
विकल्प
0.1 mol dm–3 \[\ce{NH4OH}\] and 0.1 mol dm–3 \[\ce{HCl}\]
0.05 mol dm–3 \[\ce{NH4OH}\] and 0.1 mol dm–3 \[\ce{HCl}\]
0.1 mol dm–3 \[\ce{NH4OH}\] and 0.05 mol dm–3 \[\ce{HCl}\]
0.1 mol dm–3 \[\ce{CH4COONa}\] and 0.1 mol dm–3 \[\ce{NaOH}\]
Advertisements
उत्तर
0.1 mol dm–3 \[\ce{NH4OH}\] and 0.05 mol dm–3 \[\ce{HCl}\]
Explanation:
When 0.1 mol dm–3 \[\ce{NH4OH}\] and 0.05 mol dm–3 \[\ce{HCl}\] react total amount of \[\ce{HCl}\] reacts with \[\ce{NH4OH}\] to form \[\ce{NH4Cl}\] and some \[\ce{NH4OH}\] will be left unreacted. Thus, the resultant solution contains \[\ce{NH4Cl}\] and \[\ce{NH4OH}\] which will produce a buffer solution.
APPEARS IN
संबंधित प्रश्न
A solution of NH4Cl and NH4OH acts as a buffer.
Cu is precipitated as CuS while Zn is not precipitated when H2S is passed through an acidic solution of Cu(NO3 )2 and Zn(NO3)2 respectively.
The pKb of weak base BOH [Kb(BOH) = 1 × 10-5] will be ______.
Write the formula to calculate pH of buffer solution.
Define buffer solution.
Write one application of the following buffer:
Citrate buffer
Write one application of the following buffer:
NH4OH + NH4Cl
____________ forms a basic buffer solution.
Which will make basic buffer?
Ksp of Al(OH)3 is 1 × 10−15 M. At what pH does 1.0 × 10−3 M Al3+ precipitate on the addition of buffer of NH4Cl and NH4OH solution?
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.
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.
Which of the following combinations will constitute a buffer solution?
Write any four applications of buffer solution.
Calculate pKa of HF if Ka= 7.2 x 10-4.
Calculate the pOH of a buffer solution formed from 0.3 M weak base and 0.45 M of its salt with strong acid [pKb = 4.7447].
