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25 November, 06:44

The pH of a fruit juice is 4.7. Find the hydronium ion concentration, [Upper H 3 Upper O Superscript plus ] , of the juice. Use the formula pHequalsnegative log [Upper H 3 Upper O Superscript plus ].

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  1. 25 November, 06:50
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    Given:

    pH = 4.7

    But,

    pH = - log[H3O+]

    [H3O+] = 10^-pH

    [H3O+] = 10^-4.7

    = 1.995 * 10^-5

    = 2 * 10^-5 M.
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