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26 August, 14:58

What is the pH of a solution with a 3.8 * 10-4 M hydronium ion concentration?

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  1. 26 August, 18:12
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    3.4

    Explanation:

    The pH scale is used to express the acidity or basicity of a solution.

    If the pH <7, the solution is acid. If the the solution is neutral. If the pH> 7, the solution is basic.

    Given the hydronium ion concentration [H₃O⁺] = 3.8 * 10⁻⁴ M, we can calculate the pH using the following expression.

    pH = - log [H₃O⁺]

    pH = - log 3.8 * 10⁻⁴

    pH = 3.4

    This solution is acid.
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