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16 Nov 2019
PLEASE ANSWER BOTH PART A & B
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: Percent ionization = [HA] ionized/[HA] initial times 100% Percent ionization increases with increasing K_a. Strong acids, for which K_a 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. 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 I.C.E on the left-hand side. Such a table is shown below for the reaction: A + B AB Initial (M) Change (M) Equilibrium (M) A certain weak acid, HA, has a K_a value of 9.5 times 10^-7. Calculate the percent ionization of HA in a 0.10 M solution. Express your answer to two significant figures and include the appropriate units. Calculate the percent ionization of HA in a 0.010 M solution. Express your answer to two significant figures, and include the appropriate units.
PLEASE ANSWER BOTH PART A & B
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: Percent ionization = [HA] ionized/[HA] initial times 100% Percent ionization increases with increasing K_a. Strong acids, for which K_a 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. 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 I.C.E on the left-hand side. Such a table is shown below for the reaction: A + B AB Initial (M) Change (M) Equilibrium (M) A certain weak acid, HA, has a K_a value of 9.5 times 10^-7. Calculate the percent ionization of HA in a 0.10 M solution. Express your answer to two significant figures and include the appropriate units. Calculate the percent ionization of HA in a 0.010 M solution. Express your answer to two significant figures, and include the appropriate units.
Nestor RutherfordLv2
30 Sep 2019