The ph of a popular soft drink is 3.4; what is its hydronium ion concentration?

Question

Chemistry

Adolfo Parks

9 October, 12:15

The ph of a popular soft drink is 3.4; what is its hydronium ion concentration?

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Pumpkin · Answer 1

Answer is: 4·10⁻⁴ M.

pH (soft drink) = 3,4. This drink is acidic.

c (H₃O⁺) = ? - concentration of hydronium ion.

pH = - log c (H₃O⁺) ⇒ c (H₃O⁺) = 10∧-pH.

c (H₃O⁺) = 10⁻³·⁴.

c (H₃O⁺) = 4·10⁻⁴ M (mol/dm³).

pH (potential of hydrogen) i s a numeric scale used to define the acidity or basicity of an aqueous solution.