Advertisements
Advertisements
प्रश्न
Explain the types of buffer solutions.
Advertisements
उत्तर
There are two types of buffer solutions:
- Acidic buffer:
A solution containing a weak acid and its salts with strong base is called an acidic buffer solution. It maintains an acidic pH.
e.g. A solution containing weak acid such as CH3COOH and its salt such as CH3COONa is an acidic buffer solution. - Basic buffer:
A solution containing a weak base and its salt with strong acid is the basic buffer solution. It maintains an alkaline pH.
e.g. A solution containing a weak base such as NH4OH and its salt such as NH4Cl is a basic buffer solution.
संबंधित प्रश्न
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.
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.
Choose the most correct answer:
Which of the Na following is a buffer solution?
Answer the following in one sentence :
How are basic buffer solutions prepared?
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
Name the buffer which is used to maintained pH of 8 to 10 for precipitation of cations III A group in qualitative analysis.
Define buffer solution.
Write one application of the following buffer:
`"HCO"_3^- + "H"_2"CO"_3`
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.
What is the pH of buffer solution formed by mixing 0.01 M acetic acid and 0.05 M sodium acetate? (pKa = 4.7447)
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].
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?
