हिंदी

Name the buffer which is used to maintained pH of 8 to 10 for precipitation of cations III A group in qualitative analysis. - Chemistry

Advertisements
Advertisements

प्रश्न

Name the buffer which is used to maintained pH of 8 to 10 for precipitation of cations III A group in qualitative analysis.

एक पंक्ति में उत्तर
Advertisements

उत्तर

Ammonium hydroxide + Ammonium chloride (NH4OH + NH4Cl) buffer.

shaalaa.com
Buffer Solutions
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 3: Ionic Equilibria - Very short answer questions

APPEARS IN

एससीईआरटी महाराष्ट्र Chemistry [English] 12 Standard HSC
अध्याय 3 Ionic Equilibria
Very short answer questions | Q 1

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?


A solution of NH4Cl and NH4OH acts as a buffer.


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


In biochemical system, pH of blood in our body is maintained due to the following buffer:


Write the formula to calculate pH of buffer solution.


Explain the types of buffer solutions.


Write one application of the following buffer:

Citrate buffer


Write one application of the following buffer:

`"HCO"_3^-  + "H"_2"CO"_3`


Write one application of the following buffer:

NH4OH + NH4Cl


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.


Veronal is used as a/an ______.


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]


____________ forms a basic buffer solution.


The dissociation constant of a weak acid is 1 × 10−3. In order to prepare a buffer solution with a pH = 4, the `(["Acid"])/(["Salt"])` ratio should be ____________.


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): A solution containing a mixture of acetic acid and sodium acetate maintains a constant value of \[\ce{pH}\] on addition of small amounts of acid or alkali.

Reason (R): A solution containing a mixture of acetic acid and sodium acetate acts as a buffer solution around \[\ce{pH}\] 4.75.


Write any four applications of buffer solution.


What are buffer solutions? 


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


Explain buffer action of sodium acetate-acetic acid buffer.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×