The pH Scale
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7 Terms
1
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In 1909 Soren Sorenson devised the concept of
pH scale
2
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It is used because the [ H3O (aq) ] is
Very small
3
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At 25C (standard conditions) most solutions have a pH that falls between
0.0 and 14.0
4
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It is possible to have a negative pH or a pH above 14
Yes you can have a NEGATIVE pH and a pH above 14
5
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What kind of scale is used and whats it based off
It is a LOGARITHMIC SCALE based on whole numbers that are powers of 10
6
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There is a 10 fold change in the [ OH (aq) ] for every change in
1 on the pH SCALE
eg) a solution with a pH of 11 is ( 10 Ć 10) = 100 times more basic than a solution with a pH of 9
7
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pH Scale
Less than 7 = Acidic
More than 7 = Basic
7 = Neutral
Note 
Flashcards (34)