Calculate the percent ionization of arsenous acid (H3AsO3) in solutions of each of the following concentrations (Ka...

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Chemistry

Calculate the percent ionization of arsenous acid(H₃AsO₃) in solutions of each of thefollowing concentrations (K_a = 5.1e-10.)

(a) 0.206 M

%

(b) 0.556 M

%

(c) 0.822 M

%

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4.5 Ratings (577 Votes)

The relation between percent ionization a , Ka and C is Ka = Ca²

Then ,

Â Â a = (Ka/C)^1/2

Given that Ka of H₃AsO₃ = 5.1 x 10^-10

a)Â Â Â C = 0.206 M

Â Â Â Â Â a = (Ka/C)^1/2

^{Â Â Â Â Â Â Â Â Â Â Â Â} = (5.1 x 10^-10/0.206)^1/2

Â Â Â Â Â Â Â Â = 0.000049

Â Â Â Â Â Â Â = 0.0049 %

Therefore,

percent ionization = 0.0049 %

b)Â Â Â C = 0.556 M

Â Â Â Â Â a = (Ka/C)^1/2

^{Â Â Â Â Â Â Â Â Â Â Â Â} = (5.1 x 10^-10/0.556)^1/2

Â Â Â Â Â Â Â Â = 0.00003

Â Â Â Â Â Â Â = 0.003 %

Therefore,

percent ionization = 0.003 %

c)Â Â Â C = 0.822 M

Â Â Â Â Â a = (Ka/C)^1/2

^{Â Â Â Â Â Â Â Â Â Â Â Â} = (5.1 x 10^-10/0.822)^1/2

Â Â Â Â Â Â Â Â = 0.000025

Â Â Â Â Â Â Â = 0.0025 %

Therefore,

percent ionization = 0.0025 %

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Calculate the percent ionization of arsenous acid (H3AsO3) in solutions of each of the following concentrations (Ka...

Free

60.1K

Verified Solution

Question

Chemistry

Calculate the percent ionization of arsenous acid(H3AsO3) in solutions of each of thefollowing concentrations (Ka = 5.1e-10.)(a) 0.206 M%(b) 0.556 M%(c) 0.822 M%

Answer & Explanation Solved by verified expert

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Other questions asked by students

Calculate the percent ionization of arsenous acid(H₃AsO₃) in solutions of each of thefollowing concentrations (K_a = 5.1e-10.)

(a) 0.206 M

%

(b) 0.556 M

%

(c) 0.822 M

%