A) 4
B) 5
C) 6
D) 7
Correct Answer: A
Solution :
\[pH=p{{K}_{a}}+\text{log}\frac{\text{ }\!\![\!\!\text{ Salt }\!\!]\!\!\text{ }}{\text{ }\!\![\!\!\text{ Acid }\!\!]\!\!\text{ }}\] \[pH=-\log \,(1.8\times {{10}^{-5}})+\log \frac{[10]}{[100]}\] \[=-\log \,\,1.8+5+\log \,\,{{10}^{-1}}\] \[=-\ 0.2553+5-1=3.7447\,\,\,\text{or}\,\,=4\]You need to login to perform this action.
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