A) \[3.24\]
B) \[4.59\]
C) \[5.09\]
D) \[6.67\]
Correct Answer: D
Solution :
The mixture consist of weak acid and its salt with strong base, so it acts as a acidic buffer solution. According to Henderson Hasselbalch equation \[pH{{=}_{p}}{{K}_{a}}+\log \frac{[salt]}{[acid]}\] \[=4.57+\log \frac{0.10}{0.03}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,[\log 3=0.4771]\] \[pH=4.57+2.095=6.67\]You need to login to perform this action.
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