Question

A certain weak acid, HA, has a Ka value of 3.2×10−7.

1. Calculate the percent ionization of HA in a 0.10 M solution.

2. Calculate the percent ionization of HA in a 0.010 M solution.

Answer #1

Given that Ka value = 3.2×10^{−7}

We know that Ka = ca^{2} a
= percent ionization

a = (Ka/C)^{1/2}

a) Given that C = 0.1 M

percent ionization

a = (Ka/C)^{1/2}

= ( 3.2×10^{−7}/0.1)^{1/2}

^{ } = 1.78 x 10^{-3}

= 0.178 %

Therefore,

percent ionization of HA in a 0.10 M solution = 0.178 %

b)

Given that C = 0.01 M

percent ionization

a = (Ka/C)^{1/2}

= ( 3.2×10^{−7}/0.01)^{1/2}

^{ } = 5.65 x 10^{-3}

= 0.565 %

Therefore,

percent ionization of HA in a 0.010 M solution = 0.565 %

A certain weak acid, HA, has a Ka value of
3.2×10−7.
1. Calculate the percent ionization of HA in a 0.10 M
solution.
2. Calculate the percent ionization of HA in a 0.010 M
solution.

A certain weak acid, HA, has a Ka value of
9.5×10−7.
1. Calculate the percent ionization of HA in a 0.10 M
solution
2.Calculate the percent ionization of HA in a 0.010 M
solution.

A certain weak acid, HA, has a Ka value of 1.4×10−7.
1.Calculate the percent ionization of HA in a 0.10 M
solution.
2.Calculate the percent ionization of HA in a 0.010 M
solution.

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A) Calculate the percent ionization of HA in a 0.10 M
solution.
B) Calculate the percent ionization of HA in a 0.010 M
solution.

A certain weak acid, HA, has a Ka value of 2.1×10−7.
A) Calculate the percent ionization of HA in a 0.10 M
solution.
B)Calculate the percent ionization of HA in a 0.010 M
solution.
Include units, Thank you!

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Express your answer to two significant figures and include the
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Value = Units =
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Part B Calculate
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Part A
Calculate the percent ionization of HA in a 0.10 M
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Part B
Calculate the percent ionization of HA in a 0.010 M
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Part A
Calculate the percent ionization of HA in a 0.10 M
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Part B
Calculate the percent ionization of HA in a 0.010 M
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