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6 November, 09:35

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

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  1. 6 November, 09:51
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    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.
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