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PH of Common Substances Timberlake, Chemistry 7 th Edition, page 335.

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Presentation on theme: "PH of Common Substances Timberlake, Chemistry 7 th Edition, page 335."— Presentation transcript:

1 pH of Common Substances Timberlake, Chemistry 7 th Edition, page 335

2 Calculating pH pH = -log [H + ] So if [H + ] = 1x10 -5 pH = - log (1x10 -5 ) = 5 Calculate the pH if [H + ] = 1 x MpH = [H + ] = 3.0 x MpH = [H + ] = 8.2 x MpH =

3 Convert pH to [H + ] 10 -pH = [H + ] If pH = 5, 10 -pH = = = 1 x M Calculate the [H+] if pH = 2.37[H + ] = pH = 11.05[H + ] = pH = 6.50[H + ] =

4 pH of Common Substance 14 1 x x x x x x x x x x x x x x x x x x x x x x x x x x x x NaOH, 0.1 M Household bleach Household ammonia Lime water Milk of magnesia Borax Baking soda Egg white, seawater Human blood, tears Milk Saliva Rain Black coffee Banana Tomatoes Wine Cola, vinegar Lemon juice Gastric juice More basic More acidic pH [H 1+ ] [OH 1- ] pOH 7 1 x x

5 pOH pOH= -log [OH - ] 10 -pOH = [OH - ] So if [OH - ] = 4 x M pOH = -log (4 x ) = = 2.40 pH + pOH = 14

6 [H+][OH-]pHpOH A / B / N 3.2 x x

7 Complete this for homework… [H+][OH-]pHpOH A / B / N 2.5 x x


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