A) \[7.0\times {{10}^{-3}}M\]
B) \[4.1\times {{10}^{-4}}M\]
C) \[0.20M\]
D) \[4.1\times {{10}^{-3}}M\]
Correct Answer: A
Solution :
[a] \[[{{H}_{3}}{{O}^{+}}]=\sqrt{{{K}_{1}}{{C}_{1}}+{{K}_{2}}{{C}_{2}}}\] \[=\sqrt{1.8\times {{10}^{-4}}\times 0.1+3.1\times {{10}^{-4}}\times 0.1}\] \[=7\times {{10}^{-3}}M\]You need to login to perform this action.
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