Equilibrium Question 311
Question: Hydrogen ion concentration of an aqueous solution is $ 1\times {10^{-4}}M $ . The solution is diluted with equal volume of water. Hydroxyl ion concentration of the resultant solution in terms of mol $ d{m^{-3}} $ is [KCET 2001]
Options:
A) $ 1\times {10^{-8}} $
B) $ 1\times {10^{-6}} $
C) $ 2\times {10^{-10}} $
D) $ 0.5\times {10^{-10}} $
Show Answer
Answer:
Correct Answer: C
Solution:
$ [{H^{+}}]=1\times {10^{-4}}M\Rightarrow [{H^{+}}][O{H^{-}}]=1\times {10^{-14}} $ \ $ [O{H^{-}}]=\frac{1\times {10^{-14}}}{0.5\times {10^{-4}}}=2\times {10^{-10}} $ M
