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Molarity

estion : 1 Wh...

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estion : 1 Which of the following statements is/are true for a buffer solution? Options: Wrong It is a solution which resists the change in pH at all conditions There are two types of buffer only - Acidic and basic Should have chosen Ammonium acetate (CH3COONH4) acts as buffer All are correct

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Q. Assertion: A buffer solution has a capacity to resist the change in pH value on an addition of a small amount of acid or base to it.
Reason: An aqueous solution of ammonium acetate can act as buffer.

Q. Assertion :An aqueous solution of ammonium acetate acts as a buffer solution. Reason: A buffer solution reacts with small quantities of hydrogen or hydroxy ions and keeps the pH almost same

Q. A physician wishes to prepare a buffer solution at pH = 3.58 that efficiently resists a change in pH yet contains only small conc. of the buffering acid. Which one of the following weak acid together with its sodium salt, would be best to use.

Q. pH of a buffer solution decreases by

0.02

0.12 g

of acetic acid is added to

250 m L

of a buffer solution of a acetic acid and potassium acetate at

27^{o} C

. The buffer capacity of the solution is:

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g of HCl are added to

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L of an acidic buffer, its pH changes from

3.4

2.9

. The buffer capacity of the buffer solution is :

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