A) 7
B) 4.7
C) 5.3
D) 1.4
Correct Answer: B
Solution :
[Salt]= 0.1 M, [Acid]= 0.1 M \[{{K}_{a}}=1.8\times {{10}^{-5}}\] ; \[pH=-\log {{K}_{a}}+\text{log}\frac{\text{ }\!\![\!\!\text{ Salt }\!\!]\!\!\text{ }}{\text{ }\!\![\!\!\text{ Acid }\!\!]\!\!\text{ }}\] \[=-\text{log}1.8\times {{10}^{-5}}+\text{log}\frac{0.1}{0.1}\]\[=-\text{log}\,\,1.8\times {{10}^{-5}}\] \[pH=4.7\].You need to login to perform this action.
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