calculate the equilibrium concentration of H3O+ in a 0.20 M solution of oxalis a

Question

calculate the equilibrium concentration of H3O+ in a 0.20 M solution of oxalis acid Resources 7 of 14 next Many household cleaning products contain oxalic acid, H2Cro4, a diprotic acid with the following dissociation K 5.9 x 10 Kaz 6.4 x 10 Part A Calculate the equilibrium concentration of HaO in a o 20 M solution of oxalic acid Express your answer to two significant figures and include the appropriate units. [H30 Value Units Submit Hints My Answers Give Up Review Part Part B This question will be shown after you complete previous question(s). Part C

Explanation / Answer

H2C2O4 + H2O <-----> H3O+ + HC2O4-
5.9 x 10^-2 = x^2 / 0.20-x
0.0118 - 5.9 x 10^-2 x = x^2
x^2 + 5.9 *10^-2 x - 0.0118=0
x = 0.083
X = [H3O+] = 0.083 M

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