PK a of CH 3 COOH is 4-74- Thus- the buffer range for CH 3 COOH and CH 3 COON a buffer isA- 3-74 to 4-74B- 4-74 to 5-74C- 3-74 to 5-74D- 1-0 to -1-0

The correct option is C 3.74 to 5.74Buffer solution is most effective, when [A^ ] = 10[HA] nbsp; or [HA] = 10[A^ ] Thus, pH =pK_a ±log 10=pK_a ± 1=4.74 ± 1 H ...

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Standard XII

Chemistry

Henderson Hassleback Equation

pK a of CH 3 ...

Question

$p K_{a}$ of $C H_{3} C O O H$ is 4.74. Thus, the buffer range for $C H_{3} C O O H$ and $C H_{3} C O O N a$ buffer is

3.74 to 4.74

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4.74 to 5.74

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3.74 to 5.74

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1.0 to -1.0

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Solution

The correct option is C 3.74 to 5.74
Buffer solution is most effective, when
$[A^{-}] = 10 [H A]$
or $[H A] = 10 [A^{-}]$
Thus, $p H = p K_{a} \pm log 10 = p K_{a} \pm 1 = 4.74 \pm 1$
Hence, pH range will be $\pm 1$ of $p K_{a}$ value.
So, the buffer range for $C H_{3} C O O H a n d C H_{3} C O O N a$ is 3.74 to 5.74

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Henderson Hassleback Equation

Standard XII Chemistry

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pKa of CH3COOH is 4.74. Thus, the buffer range for CH3COOH and CH3COONa buffer is

The correct option is C 3.74 to 5.74Buffer solution is most effective, when [A−]=10[HA] or [HA]=10[A−] Thus, pH=pKa±log 10=pKa±1=4.74±1 Hence, pH range will be ±1 of pKa value. So, the buffer range for CH3COOH and CH3COONa is 3.74 to 5.74

$p K_{a}$ of $C H_{3} C O O H$ is 4.74. Thus, the buffer range for $C H_{3} C O O H$ and $C H_{3} C O O N a$ buffer is