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15 June, 04:56

One solution turns blue. A possible hydrogen ion concentration for this solution is: 1 * 10-2 M 5 * 10-2 M 5 * 10-4 M 1 * 10-8 M

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  1. 15 June, 07:59
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    1*10^-8 M

    Explanation:

    Since the solution turns blue, it means the solution is a base. Now, we shall determine the pH to know the possible hydrogen ion concentration for this solution.

    1. pH = - log H+

    H + = 1*10¯² M

    pH = - log 1*10¯²

    pH = 2

    2. pH = - log H+

    H + = 5*10¯² M

    pH = - log 5*10¯²

    pH = 1.3

    3. pH = - log H+

    H + = 5*10¯⁴ M

    pH = - log 5*10¯⁴

    pH = 3.3

    4. pH = - log H+

    H + = 1*10^-8 M

    pH = - log 1*10^-8

    pH = 8

    A pH reading between 0 and 6 indicates an acid solution. A pH reading of 7 indicates a neutral solution. A pH reading between 8 and 14 indicates an alkaline/basic solution.

    From the above calculations, we can see that the solution gives a pH of 8 indicating a basic solution when the hydrogen ion concentration is 1*10^-8 M
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