A) 3.0
B) 10.0
C) 6.1
D) 7.2
Correct Answer: C
Solution :
\[K=K{{a}_{1}}\times K{{a}_{2}}\]\[=4.5\times {{10}^{-3}}\times 1.7\times {{10}^{10}}\] \[{{H}^{+}}=\sqrt{Kc}\] \[=\sqrt{4.5\times {{10}^{-3}}\times 1.7\times {{10}^{-10}}\times .01}\] \[=.87\times {{10}^{-7}}\] \[pH=-\log \ 0.87\times {{10}^{-7}}\]\[=7-0.93=6.07\].You need to login to perform this action.
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