Problem: What is the equilibrium concentration of H3O+ in 0.20 M solution of oxalic acid?

FREE Expert Solution

Oxalic acid → H2C2O4(aq) → diprotic acid


Gather the Ka values for oxalic acid.

Ka1 = 5.9x10-2

1st dissociation:                H2C2O4(aq) + H2O(l) → HC2O4­-(aq) + H3O+(aq)

Ka2 = 6.4x10-5

2nd dissociation:               HC2O4­-(aq) + H2O(l) → C2O4­­-(aq)H3O+(aq)


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What is the equilibrium concentration of H3O+ in 0.20 M solution of oxalic acid?

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