Plz, help me with this?

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  • 2 months ago
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    6.10

    a) pH = -log[H+]

    If [H+] = 3.98 x 10^-5 , then the pH is pH = -log[3.98 x 10^-5]

    pH = 4.4, this pH is between the Vinegar and Milk.

    b) A swimming pool should have a pH of 7.5. to do this we get the antilog of 7.5

    pH = -log[H+]

    10^(-pH) = [H+]

    10^(-7.5) =  [H+] = 3.1622776601684 x 10^−8

    [H+] = 3.162 x 10^−8

    6.11

    a) D= 10log [I/10^-12)

        D = 10 log[ 10^-11/10^-12]= 

        D = 10* log [10]

         D= 10 * 1 = 10 

    b) 40 = 10 log [I/10^-12]

         4 = log [I/10^-12]

       10^4 = I/10^-12

       10^4 * 10^-12 = I

        10^-8 =  I

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