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Define buffer solution. - Chemistry

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प्रश्न

Define buffer solution.

परिभाषा

उत्तर

Buffer solution is defined as a solution which resists drastic changes in pH when a small amount of strong acid or strong base or water is added to it.

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Buffer Solutions
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अध्याय 3: Ionic Equilibria - Short answer questions (Type- II)

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?


When NH4 Cl and NH4OH are added to a solution containing both, Fe3+ and Ca2+ ions, which ion is precipitated first and why?


A solution of NH4Cl and NH4OH acts as a buffer.


Choose the most correct answer:

Which of the Na following is a buffer solution?


Answer the following in one sentence :

Write one property of a buffer solution.


Answer the following in one sentence :

Classify the following buffers into different types :

CH3COOH + CH3COONa


Answer the following in one sentence :

Classify the following buffers into different types :

NH4OH + NH4Cl


Answer the following in one sentence :

Classify the following buffers into different types :

Sodium benzoate + benzoic acid


Answer the following in one sentence :

Classify the following buffers into different types :

Cu(OH)2 + CuCl2


The pKb of weak base BOH [Kb(BOH) = 1 × 10-5] will be ______.


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.


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]


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?


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]


Define Acidic buffer solution.


Write the applications of buffer solution.


Calculate pKa of HF if Ka= 7.2 x 10-4.


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