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Question
Answer the following in one sentence :
How are basic buffer solutions prepared?
Solution
Basic buffer solutions are prepared by mixing aqueous solutions of a weak base and its salt with strong acid.
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The pKb of weak base BOH [Kb(BOH) = 1 × 10-5] will be ______.
Define buffer solution.
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Citrate buffer
Write one application of the following buffer:
`"HCO"_3^- + "H"_2"CO"_3`
Veronal is used as a/an ______.
Which will make basic buffer?
The hydrogen ion concentration of a buffer solution consisting of a weak acid and its salts is given by ____________.
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?
Which of the following will produce a buffer solution when mixed in equal volumes?
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?
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]
Calculate pKa of HF if Ka= 7.2 x 10-4.
Explain buffer action of sodium acetate-acetic acid buffer.
