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6 November, 05:09

Calculate the [H^+] of a solution that has a pH of 8.76 *

Round answers to 2 places past the decimal. Use the following format: #.## x 10^-# (there should be a space on either side of the x

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  1. 6 November, 06:42
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    The [H⁺] of the solution is 1.74*10⁻⁹ M

    Explanation:

    pH, short for Hydrogen Potential, is a measure of acidity or alkalinity that indicates the amount of hydrogen ions present in a solution or substance. The pH scale ranges from 0 to 14. Values less than 7 indicate the acidity range and those greater than 7 indicate alkalinity or basicity. Value 7 is considered neutral.

    The pH is calculated as the negative logarithm (base 10) of the molar concentration of the hydrogen or proton ions (H⁺) or hydronium ions (H₃O⁺).

    pH = - log [H⁺] = - log [H₃O⁺]

    In this case, you know that pH = 8.76. Replacing in the definition of pH:

    8.76 = - log [H⁺]

    Solving:

    [H⁺] = 10⁽⁻⁸ ⁷⁶⁾

    [H⁺] = 1.74*10⁻⁹ M

    The [H⁺] of the solution is 1.74*10⁻⁹ M
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