Question

PH value of solution whose hydronium Ion concentration is 6.2 × 10raise to minus 9 mole per litre

Answer 1

i am just giving a hint :- log [ 1/H+]

[10∧7/6.2 x 10 ∧-9]

Answer 2

The pH value of solution whose hydronium Ion concentration is $6.2\times10^{-9}$ mol/lit is 8.

Given:

Hydronium ion concentration [$H_3O^+$] = $6.2\times10^{-9}$ mol/lit

To find:

pH of the solution = ?

Formula to be used:

pH = -log [$H_3O^+$]

Calculation:

As the value of hydronium ion is given, with help of it the pH value can be calculated because pH is directly equal to - log of hydronium ion concentration.

pH = -log [$H_3O^+$]

pH = - log ($6.2\times10^{-9}$)

pH = 8.207

pH = 8

Conclusion:

Thus the pH of the given solution is calculated as 8.

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