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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Write one application of the following buffer: NH4OH + NH4Cl

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प्रश्न

Write one application of the following buffer:

NH4OH + NH4Cl

एका वाक्यात उत्तर
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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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पाठ 3: Ionic Equilibria - Short answer questions (Type- II)

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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 :

Write one property of a buffer solution.


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


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


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.


Define buffer solution.


Explain the types of buffer solutions.


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.


Which will make basic buffer?


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 ____________.


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?


Write any four applications of 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].


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