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20 March, 09:03

Find the concentration of H + ions at a pH = 11 and pH = 6. Then divide the concentration of H + ions at a pH = 11 by the of H + ions at a pH = 6. Record your answer in Table C. What is the concentration of H + ions at a pH = 11? mol/L What is the concentration of H + ions at a pH = 6? mol/L How many fewer H + ions are there in a solution at a pH = 11 than in a solution at a pH = 6?

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  1. 20 March, 09:09
    0
    The hydrogen ion concentration can be calculated using pH

    pH = - log [H⁺]

    when pH is known antilog of pH needs to be calculated

    [H⁺] = antilog (-pH)

    when pH = 11

    [H⁺] = antilog (-11)

    [H⁺] = 1 x 10⁻¹¹ mol/L

    when pH = 6

    [H⁺] = antilog (-6)

    [H⁺] = 1 x 10⁻⁶ mol/L

    then to find how much fewer H⁺ ions at pH = 11 than when pH = 6, we have to find the ratio.

    ratio = (1 x 10⁻¹¹ mol/L) / (1 x 10⁻⁶ mol/L)

    there's 10⁻⁵ lesser H⁺ ions when pH - 11 than when pH - 6
  2. 20 March, 09:24
    0
    0.00000000001

    0.000001

    100,000
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