Equilibrium Question 364
Question: pH value of a solution, whose hydronium ion concentration is $ 6.2\times {10^{-9}}mol/,l, $ is [AFMC 1999; AIIMS 2000]
Options:
A) 6.21
B) 7.21
C) 7.75
D) 8.21
Show Answer
Answer:
Correct Answer: D
Solution:
$ [H_3{O^{+}}] $ means $ [{H^{+}}]=6.2\times {10^{-9}}mol/l $
$ pH=-\log ,(6.2\times {10^{-9}})=8.21 $
