Asked by charley
Calculate the H+ ion concentration if 0.20M NH3 solution is 2.5% ionized.
Answers
Answered by
DrBob222
0.2 x 0.025 = 0.005
..........NH3 + H2O ==> NH4^+ + OH^-
initial...0.20............0.......0
change....-0.005.......0.005....0.005
equil....0.195.........0.005...0.005
(OH^-) = 0.005.
You know (H^+)(OH^-) = Kw = 1E-14. Substitute and solve for (H^+).
..........NH3 + H2O ==> NH4^+ + OH^-
initial...0.20............0.......0
change....-0.005.......0.005....0.005
equil....0.195.........0.005...0.005
(OH^-) = 0.005.
You know (H^+)(OH^-) = Kw = 1E-14. Substitute and solve for (H^+).
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