What is pH of 50 ml 0-05 M NaOH and 50 ml 0-1 N CH 3 COOHpK a -4-73A- 4-73B- 4-63C- 3-73D- 4-83

NaOH + CH_3COOH → CH_3COO Na+H_2O 2.5 5 ...

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Byju's Answer

Standard XII

Chemistry

Salt of Weak Acid and Strong Base

What is pH of...

Question

What is pH of 50 ml 0.05 (M) NaOH and 50 ml 0.1 (N)
$C H_{3} C O O H$
$p K_{a} = 4.73$

4.63

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4.73

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3.73

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4.83

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Solution

The correct option is C 3.73
NaOH + $C H_{3} C O O H$ $\to$ $C H_{3} C O O N a + H_{2} O$
2.5 5 0 Milli mole before reaction
2.5 – 2.5 5 – 2.5 2.5 Milli mole before reaction
Concentration of $C H_{3} C O O H = \frac{2.5 \times 10^{-} 3}{100 \times 10^{- 3}} = 2.5 \times 10^{- 2} M$
Concentration of $C H_{3} C O O N a i s a l s o 2.5 \times 10^{- 2} m$
Applying henderson's equation $p H = p K a + l o g \frac{[S a l t]}{[A c i d]} = 4.73$

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What is pH of 50 ml 0.05 (M) NaOH and 50 ml 0.1 (N) ​CH3COOH pKa=4.73

What is pH of 50 ml 0.05 (M) NaOH and 50 ml 0.1 (N)
$C H_{3} C O O H$
$p K_{a} = 4.73$