A) 6.8
B) 7
C) 7.5
D) depends upon\[{{K}_{a}}\]of the acid
Correct Answer: D
Solution :
The pH of acidic buffers is calculated by following formula \[pH=-\log {{K}_{a}}+\log \left[ \frac{salt}{acid} \right]\] \[\therefore \]pH of acidic buffer depends on value of\[{{K}_{a}}\] and is always less than 7.
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