A physician wishes to prepare a buffer solution at \[pH=3.58\] that efficiently resists changes in \[pH\] yet contains only small concentration of the buffering agents. Which of the following weak acids together with its sodium salt would be best to use [CBSE PMT 1997]

Acetoacetic acid \[(p{{K}_{a}}=3.58)\]

\[m-\]chlorobenzoic acid \[(p{{K}_{a}}=3.98)\]

\[p-\]chlorocinnamic acid \[(p{{K}_{a}}=4.41)\]

\[2,\,\,5-\]dihydroxy benzoic acid \[(p{{K}_{a}}=2.97)\]

A physician wishes to prepare a buffer solution at \[pH=3.58\] that ef

1.	A physician wishes to prepare a buffer solution at \[pH=3.58\] that efficiently resists changes in \[pH\] yet contains only small concentration of the buffering agents. Which of the following weak acids together with its sodium salt would be best to use [CBSE PMT 1997]
A.	\[m-\]chlorobenzoic acid \[(p{{K}_{a}}=3.98)\]
B.	\[p-\]chlorocinnamic acid \[(p{{K}_{a}}=4.41)\]
C.	\[2,\,\,5-\]dihydroxy benzoic acid \[(p{{K}_{a}}=2.97)\]
D.	Acetoacetic acid \[(p{{K}_{a}}=3.58)\]
Answer» D. Acetoacetic acid \[(p{{K}_{a}}=3.58)\]

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A physician wishes to prepare a buffer solution at \[pH=3.58\] that efficiently resists changes in \[pH\] yet contains only small concentration of the buffering agents. Which of the following weak acids together with its sodium salt would be best to use [CBSE PMT 1997]

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