A) 0.2%
B) 0.5%
C) 4%
D) 5%
Correct Answer: B
Solution :
\[{{x}_{1}}=\sqrt{{{K}_{a}}}/{{C}_{1}}\]or\[{{x}_{2}}=\sqrt{{{K}_{a}}}/{{C}_{2}}\] \[\frac{{{x}_{2}}}{{{x}_{1}}}=\sqrt{\frac{{{C}_{1}}}{{{C}_{2}}}}\]or \[{{x}_{2}}={{x}_{1}}\sqrt{\frac{{{C}_{1}}}{{{C}_{2}}}}=1\times \frac{1}{2}=0.5%\]
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