Determine the pH of each of the following solutions.
(a) 0.807 M hypochlorous acid (weak acid with Ka =
3e-08).
(b) 0.672 M hypoiodous acid (weak acid with Ka =
2.3e-11).
(c) 0.807 M pyridine (weak base with Kb = 1.7e-09).
a) HClO -----> H+ + ClO-
0.807M 0 0 beggining
0.807M-x x x equilibrium
Ka= [ClO-][H+]/[HClO]= x2/ (0.807-x) -------> x= 1.56 x 10-4 M -----> pH= -log[H+]= -log 1.56 x 10-4 = 3.81
b) HIO ------> H+ + IO-
0.672M 0 0
0.672M-x x x
Ka= [IO-][H+]/[HIO]= x2/ (0.672-x)-----> x= 3.93 x 10-6 M -----> pH=- log [H+]= - log 3.93 x 10-6 = 5.41
c) C5H5N + H2O ----> C5H5NH+ + OH-
0.807M ----- 0 0
0.807M-x ----- x x
Kb= [C5H5NH+][OH-]/[C5H5N]= x2/ (0.807-x)-----> x= 3.70 x 10-5 M -----> pOH=- log [OH-]= - log 3.70 x 10-5 = 4.43
pH+ pOH=14 ---->pH= 9.57
Determine the pH of each of the following solutions. (a) 0.807 M hypochlorous acid (weak acid...
Determine the pH of each of the following solutions. (a) 0.607 M hydrosulfuric acid (weak acid with Ka = 9.5e-08). (b) 0.155 M hypoiodous acid (weak acid with Ka = 2.3e-11). (C) 0.549 M pyridine (weak base with Kb = 1.7e-09).
27. Determine the pH of each of the following solutions. (a) 0.354 M hypoiodous acid (weak acid with Ka = 2.3e-11). = _________ (b) 0.156 M carbonic acid (weak acid with Ka = 4.3e-07). = ________ (c) 0.476 M pyridine (weak base with Kb = 1.7e-09). = ________
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Determine the pH of each of the following solutions. (a) 0.213 M boric acid (weak acid with Ka = 5.8e-10). (b) 0.394 M phenol (weak acid with Ka = 1.3e-10). (c) 0.869 M pyridine (weak base with Kb = 1.7e-09).
Determine the pH of each of the following solutions. (a) 0.492 M carbonic acid (weak acid with Ka = 4.3e-07). (b) 0.770 M benzoic acid (weak acid with Ka = 6.3e-05). (c) 0.697 M pyridine (weak base with Kb = 1.7e-09).
0/4 Submissions Used -/0.1 points 22 Determine the pH of each of the following solutions. (a) 0.592 M hypochlorous acid (weak acid with Ka 3e-08). (b) 0.646 M arsenous acid (weak acid with Ka = 5.1e-10). (c) 0.731 M pyridine (weak base with Kg 1.7e-09). 23. -/0.1 points 0/4 Submissions Used Calculate the percent ionization of arsenous acid (H3AsO3) in solutions of each of thef
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