A) \[0.1\,g\]
B) \[0.2\,g\]
C) \[0.4\,g\]
D) \[1.2\,g\]
Correct Answer: C
Solution :
\[pH=12\] means \[[{{H}^{+}}]={{10}^{-12}}\] or \[[O{{H}^{-}}]={{10}^{-2}}M\] or \[[NaOH]={{10}^{-2}}M\] \[=\frac{M}{100}\] \[=\frac{1}{100}\times 40\,g{{L}^{-1}}=0.4\,g{{L}^{-1}}\]You need to login to perform this action.
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