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Calculate the percent ionization of formic acid solutions having the following concentrations. a) 1.20M b)0.450M c)0.130M d)5.10 x 10^-2

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Chemistry

Calculate the percent ionization of formic acid solutions havingthe following concentrations.

a) 1.20M

b)0.450M

c)0.130M

d)5.10 x 10^-2

Answer & Explanation Solved by verified expert
4.1 Ratings (716 Votes)

a) 1.20M

formic acid Ka = 1.77 x 10^-4

ionisation% = sqrt(Ka/C)   x100

                = sqrt(1.77 x 10^-4/1.2) x100

                  = 1.21     x 10^-2 x100

                  = 1.21%

b)0.450M

ionisation% = sqrt(Ka/C)   x100

ionisation% = sqrt(1.77 x 10^-4/0.45) x100

                  = = 1.98%

                

c)0.130M

ionisation% = sqrt(1.77 x 10^-4/0.13) x100

                       = 3.68%

d)5.10 x 10^-2

ionisation% = sqrt(1.77 x 10^-4/5.10 x 10^-2) x100

                       = 5.89%
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