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प्रश्न
Write one application of the following buffer:
NH4OH + NH4Cl
उत्तर
In qualitative analysis, a pH of 8 to 10 is required for precipitation of cations IIIA group. It is maintained with the use of (NH4OH + NH4Cl) buffer.
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संबंधित प्रश्न
The ionization constant of benzoic acid is 6.46 × 10–5 and Ksp for silver benzoate is 2.5 × 10–13. How many times is silver benzoate more soluble in a buffer of pH 3.19 compared to its solubility in pure water?
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A solution of NH4Cl and NH4OH acts as a buffer.
Choose the most correct answer:
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Write one property of a buffer solution.
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Classify the following buffers into different types :
NH4OH + NH4Cl
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Name the buffer which is used to maintained pH of 8 to 10 for precipitation of cations III A group in qualitative analysis.
Write the formula to calculate pH of buffer solution.
A buffer solution contains 0.3 mol dm–3 NH4OH (Kb = 1.8 × 10–5) and 0.4 mol dm–3 NH4Cl. Calculate pOH of the solution.
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[pKa of acid = 4.74]
____________ forms a basic buffer solution.
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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.
Which of the following combinations will constitute a buffer solution?
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Explain the types of buffers with example.
