Equilibrium Question 316
Question: Calculate the $ {H^{+}} $ ion concentration in a $ 1.00(M) $
$ ,HCN, $ litre solution $ (K_{a}=4\times {10^{-10}}) $ [Bihar CEE 1995]
Options:
A) $ 4\times {10^{-14}},mole/litre $
B) $ 2\times {10^{-5}},mole/litre $
C) $ 2.5\times {10^{-5}},mole/litre $
D) None of these
Show Answer
Answer:
Correct Answer: B
Solution:
$ [{H^{+}}]=\sqrt{K\times C} $
$ [{H^{+}}]=\sqrt{4\times {10^{-10}}\times 1} $ ; $ [{H^{+}}]=2\times {10^{-5}} $ mole/litre
