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Chemistry
Jaime Dunlap
27 October, 21:59
What is the PH of the acid lactic 0,20 M?
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Blankenship
28 October, 01:51
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Dissociation constant of lactic acid:
K=1.38·10⁻⁴
C=0.20 mol/L
[H⁺]=√ (KC)
pH=-lg[H⁺]=-lg{√ (KC) }
pH=-lg{√ (1.38·10⁻⁴·0.20) }=2.28
pH=2.28
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