Calculate the equilibrium concentration of undissociated in a glycolic acid solution with an analytical glycolic acid...

Calculate the equilibrium concentration of undissociated in a glycolic acid solution with an analytical glycolic acid concentration of 0.0824 and a pH of 3.180.

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Expert Solution

pH = 3.180

[H+] = 10^-pH

= 10^-3.108

= 6.61 x 10^-4 M = x

glycolic acid = HA

HA ------------------------> H+ + A-

0.0824 0 0 ---------------------> initial

-x +x + x -------------------> change

0.0824 -x x x ------------------> equilibrium

0.0824 -x = equilibirum concentration

0.0824-6.61 x 10^-4 = 0.0817 M

equilibrium concentration of undissociated in a glycolic acid solution = 0.0817 M

queen_honey_blossom answered 1 year ago

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