A) 3
B) between 2-3
C) 1
D) 5
Correct Answer: A
Solution :
\[{{K}_{a}}=1\times {{10}^{-5}}\] Concentration (c or M) = 0.1 M \[pH=-\log [{{H}^{+}}]\] \[[{{H}^{+}}]=\sqrt{{{K}_{a}}\times M}\] \[=\sqrt{1\times {{10}^{-5}}\times 0.1}\] \[=1\times {{10}^{-3}}\] \[\therefore \] \[pH=-\log {{10}^{-3}}\] \[=3\]You need to login to perform this action.
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