A) 5.04, 3.74
B) 5.04, 5.04
C) 5.04, 4.89
D) 9.56, 9.56
Correct Answer: B
Solution :
\[C{{H}_{3}}COONaC{{H}_{3}}CO{{O}^{-}}+N{{a}^{+}}\] pH of buffer \[=p{{K}_{a}}+\log \frac{[C{{H}_{3}}CO{{O}^{-}}]}{[C{{H}_{3}}COOH]}\] \[=4.74+\log \frac{500\times 0.2}{500\times 0.1}\] \[=4.74+\log \frac{500\times 0.2}{500\times 0.1}\] \[=5.04\] pH of a buffer does not change with dilution.You need to login to perform this action.
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