Equilibrium Question 475
Question: The concentration of hydronium $ (H_3{O^{+}}) $ ion in water is [CET Pune 1998]
Options:
A) Zero
B) $ 1\times 10^{7},gmion/litre $
C) $ 1\times {10^{-14}},gmion/litre $
D) $ 1\times {10^{-7}},gmion/litre $
Show Answer
Answer:
Correct Answer: D
Solution:
$ H_3{O^{+}} $ ⇌ $ O{H^{-}}+H_2 $
$ pOH+pH=14 $ ; $ 7+7=14 $ ; $ [{H^{+}}]+[O{H^{-}}]={10^{-14}} $
$ {10^{-7}}+{10^{-7}}={10^{-14}} $ ; $ [O{H^{-}}]={10^{-7}} $ gm ion/l.
