For a weak acid (HA), a 0.100 M solution was made. Students obtained the following pH value for the solution. Fill in the table 0.100 M HA pH 5.04 H3o Preview Preview [HA] (at equilibrium) Preview Ka Preview For the same solution fill out the following information: 0.100 M HA poH (Do not use scientific notation for this answer) OH] Preview Kb Preview
Show transcribed image textFor a weak acid (HA), a 0.100 M solution was made. Students obtained the following pH value for the solution. Fill in the table 0.100 M HA pH 5.04 H3o Preview Preview [HA] (at equilibrium) Preview Ka Preview For the same solution fill out the following information: 0.100 M HA poH (Do not use scientific notation for this answer) OH] Preview Kb Preview
You used the initial concentration of aspirin in the Ka expression. Instead, you need to use the equilibrium concentration. Consider that the amount of aspirin that reacted is equal to the amount of H3O+ produced. How much is left over?
Part B
A 0.100 M solution of ethylamine (C2H5NH2) has a pH of 11.87. Calculate the Kb for ethylamine.
Express your answer numerically using two significant figures.