Percent ionization
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.
part a
calculate the percent ionization of ha in a 0.10 m solution.
express your answer as a percent using two significant figures.

%

submithintsmy answersgive upreview part
part b
calculate the percent ionization of ha in a 0.010 m solution.
express your answer as a percent using two significant figures.

%

(a) 0.26 % (b) 0.80 %

Explanation:

(a)

Given that:

Concentration = 0.10 M

Considering the ICE table for the dissociation of acid as:-

The expression for dissociation constant of acid is:

Solving for x, we get:

x = 0.00026  M

Percentage ionization =

(b)

Concentration = 0.010 M

Considering the ICE table for the dissociation of acid as:-

The expression for dissociation constant of acid is:

Solving for x, we get:

x = 0.00008  M

Percentage ionization =

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

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