SATHEE: Equilibrium Question 302

Equilibrium Question 302

Question: The pH of a solution at $25^{\circ} C$ containing $0.10, m$ sodium acetate and $0.03, m$ acetic acid is $(p K_{a}$ for $C H_{3} C O O H = 4.57)$ [AIIMS 2002; BHU 2002]

Options:

A) 4.09

B) 5.09

C) 6.10

D) 7.09

Show Answer

Answer:

Correct Answer: B

Solution:

$p H = p K_{a} + \log \frac{[salt]}{a c i d}$

$= 4.57 + \log \frac{0.10}{0.03} = 5.09$

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Equilibrium Question 302

Question: The pH of a solution at 25∘C containing 0.10,m sodium acetate and 0.03,m acetic acid is (pKa for CH3COOH=4.57) [AIIMS 2002; BHU 2002]

Options:

Answer:

Solution:

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Question: The pH of a solution at $25^{\circ} C$ containing $0.10, m$ sodium acetate and $0.03, m$ acetic acid is $(p K_{a}$ for $C H_{3} C O O H = 4.57)$ [AIIMS 2002; BHU 2002]