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6 May, 05:31

What is the [H3O+] of a solution with a pH of 2.56? 2.56 M, 2.75 x 10-3 M, 363 M, or - 0.408 M

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  1. 6 May, 05:58
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    PH=2.56

    pH=-lg[H₃O⁺]

    [H₃O⁺]=10^ (-pH)

    [H₃O⁺]=10⁻²·⁵⁶=0.00275=2.75*10⁻³ mol/L

    2.75*10⁻³ M
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