A) \[1.69\times {{10}^{-5}}\]
B) \[1.69\times {{10}^{-6}}\]
C) \[1.69\times {{10}^{-4}}\]
D) none of these
Correct Answer: A
Solution :
Key Idea:\[K=C{{\alpha }^{2}}\] where K = dissociation constant of acid = ? C = concentration of acid = 0.1 M \[\alpha =1.3%\] \[K=0.1\times {{\left( \frac{1.3}{100} \right)}^{2}}\] \[=0.169\times {{10}^{-4}}\] \[=1.69\times {{10}^{-5}}\]
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