Chemistry Practice Problems Weak Acids Practice Problems Solution: Percent ionization for a weak acid (HA) is determi...

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Solution: Percent ionization for a weak acid (HA) is determined by the following formula:Percent ionization=[HA] ionized / [HA] initial × 100%For strong acids, ionization is nearly complete (100%) at most concentrations. However, for weak acids, the percent ionization changes significantly with concentration. The more diluted the acid is, the greater percent ionization.A certain weak acid, HA, has a Ka value of 7.6×10 −7.A) Calculate the percent ionization of HA in a 0.10 M solution. Express your answer as a percent using two significant figures.B) Calculate the percent ionization of HA in a 0.010 M solution. Express your answer as a percent using two significant figures.

Problem

Percent ionization for a weak acid (HA) is determined by the following formula:

Percent ionization=[HA] ionized / [HA] initial × 100%

For strong acids, ionization is nearly complete (100%) at most concentrations. However, for weak acids, the percent ionization changes significantly with concentration. The more diluted the acid is, the greater percent ionization.

A certain weak acid, HA, has a Ka value of 7.6×10 −7.

A) Calculate the percent ionization of HA in a 0.10 M solution. Express your answer as a percent using two significant figures.

B) Calculate the percent ionization of HA in a 0.010 M solution. Express your answer as a percent using two significant figures.

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