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 $



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