Question

< Homework 42 Weak Acid / Weak Base Equilibrium + Percent Ionization 2 of 8 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 Ka value of 4.7x10-7 Percent ionization=1 _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 I.C.E on the left-hand side. Such a table is shown below for the reaction: A+B AB Value Units | [A] [B] [AB] Submit Previous Answers Initial (M) Change (M) Equilibrium (M) X Incorrect; Try Again; 5 attempts remaining Part B Calculate the percent ionization of HA in a 0.010 M solution

Answer 1

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