7.3 The pH Scale
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1
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equation for pH
pH = -log[H+]
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if [H+] = 1.0 × 10-7, what is the pH?
7.00
3
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How does pH change?
the pH changes by 1 for every power of 10 change in [H+]
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how does the H+ concentration of pH 3 compare to pH 4
pH 3 has an H+ concentration 10 times that of a solution of pH 5
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pH decreases as
H+ increases
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besides taking the pH of H+ concentrations, what else can you do?
pOH and pK
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According to Kw ,
pH + pOH = 14
Note 
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