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23 April, 12:27

The pH of a solution is 2.60. What is the [H3O+] for the solution?

2.51 * 102 M

3.98 * 102 M

2.51 * 10-3 M

3.98 * 10-3 M

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Answers (1)
  1. 23 April, 12:29
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    2.51 x 10⁻³

    Explanation:

    H = - log[H₃O⁺]

    ∴ 2.60 = - log[H₃O⁺]

    log[H₃O⁺] = - 2.6.

    ∴ [H₃O⁺] = 2.51 x 10⁻³.
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