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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Write the formula to calculate pH of buffer solution. - Chemistry

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प्रश्न

Write the formula to calculate pH of buffer solution.

एका वाक्यात उत्तर

उत्तर

The formula to calculate the pH of acidic buffer solution is:

pH = pKa + log10 `(["Salt"])/(["Acid"])`

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Buffer Solutions
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पाठ 3: Ionic Equilibria - Very short answer questions

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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.


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


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 ______.


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.


Explain the types of buffer solutions.


Write one application of the following buffer:

`"HCO"_3^-  + "H"_2"CO"_3`


____________ 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 ____________.


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.


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.


Explain buffer action of sodium acetate-acetic acid buffer.


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