Question

4: TUTORIAL cent lonization © 7 of 17 > Review Constants | Periodic Table Percent ionization can be used to quantify the extent of ionization of an acid in solution and is defined by the following formula for the acid HA: A certain weak acid, HA, has a K, value of 1.5x10-7 Percent ionization - HA] ionized (HA) initial X 100% Part A Percent ionization increases with increasing K.. Strong acids, for which K, is very large, ionize completely (100%). For weak acids, the percent ionization changes with concentration. The more diluted the acid is, the greater percent ionization. Calculate the percent ionization of HA in a 0.10 M solution Express your answer to two significant figures and include the appropriate units. View Available Hint(s) A convenient way to keep track of changing concentrations is through what is often called an I.C.E table, where I stands for "Initial Concentration," C stands for "Change," and E stands for "Equilibrium Concentration." To create such a table, write the concentrations of reactant(s) and product(s) across the top, creating the columns, and write the rows Value Units

Answer 1

HA (as) t 0.lo Hecas) & A (ap) 0 (Initially) & (charge) XX equilibrium) 1.5x107 _ (1)-(2) ( 010-x) Ka= (t) . (A) (HA) (olo- x= 1.22x10-4 % Tonitation - 1.22x10 4x100 - 0.122 % To1o) or 0.12% - de x 100 [HA) initial = 1 HT t A cash (aq) illet 2) HA & (09) (0.000) (0.010-) Kas (S) (8) (0.0lo-n) O o (Initially) & (equilibrium) a 15x107 - (H) (8) (6.010s) 8= 3.94103 3.9x105x100 -0.39.se 0.01 % Toniration -

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