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Basic Buffer Action

buffer capaci...

Question

buffer capacity is defined as the amount of acid or base that must be added to the buffer to cause
a) one unit change of PH
b) two """"""""""""""""
c) no change in Ph
d) the Phto equal PKa+-1

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Solution

Answer is (a).

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Similar questions

Q. Choose the correct combination among thefollowing
A) A mixture of weak acid and its salt of strong base acts as acidic buffer.
B) As number of moles of acid or base required to change the

p^{H}

of the buffer by one unit increases, the quality of buffer increases.
C) Buffer action is maximum at

p^{H} = P^{K a}

in case of acidic buffer.

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. A buffer solution is made by mixing a weak acid

H A (K_{a} = 10^{- 6})

with its salt NaA in equal amounts. what should be the amount of acid or salt that should be added to make 90 ml of buffer solution of buffer capacity 0.1 ?

73 g

H C l

1 L

of an acidic buffer solution, its

p H

changes from 3.4 to 2.9. The buffer capacity of the buffer is:

73

H C l

1 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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