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Maci Mcpherson
Chemistry
30 March, 11:22
What is the PH of the acid lactic 0,20 M?
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Helena Mccann
30 March, 11:24
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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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