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Civil and Environmental Engineering, Civil Engineering Systems
Year 3
pH problem
What is the pH value of water containing 0.005 M of an acid with a acid dissociation constant of 0.001 M. The dissociation of the acid in water can be represented as: HA <-> H+ + A-
Ka=[H][A]/[HA]
Kw=[OH][H]=10^-14
mass balance equation:
Cta=[HA]+[A](MBE)
Charge balane equation:
CB = [H]=[A-]+[OH-]
By OTA: Lori Sharpe, MEng (IP)
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