pH value of a solution, whose hydronium ion concentration is \[6.2\times {{10}^{-9}}mol/\,l,\] is [AFMC 1999; AIIMS 2000]

pH value of a solution, whose hydronium ion concentration is \[6.2\tim

1.	pH value of a solution, whose hydronium ion concentration is \[6.2\times {{10}^{-9}}mol/\,l,\] is [AFMC 1999; AIIMS 2000]
A.	6.21
B.	7.21
C.	7.75
D.	8.21
Answer» E.

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pH value of a solution, whose hydronium ion concentration is \[6.2\times {{10}^{-9}}mol/\,l,\] is [AFMC 1999; AIIMS 2000]

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