Respuesta :

Neetoo

Answer:

[H₃O⁺] = 1.23×10⁻⁸ mol/L

Explanation:

Given data:

pH = 7.91

Hydronium ion concentration = ?

Solution:

Formula:

pH = -log[H₃O⁺]

[H₃O⁺] = 10∧-pH

Now we will put the values of pH in formula.

[H₃O⁺] = 10⁻⁷°⁹¹

[H₃O⁺] = 1.23×10⁻⁸ mol/L

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