Lactic Acid, CH₃CH(OH)CO₂H, Is a Weak Acid That Dissociates in Water

Multiple Choice

Lactic acid, CH₃CH(OH) CO₂H, is a weak acid that dissociates in water according to the equation CH₃CH(OH) CO₂H(aq) + H₂O(l)  CH₃CH(OH) CO₂^-(aq) + H₃O⁺(aq) . What species are in the aqueous solution of 0.1 M lactic acid?

A) CH₃CH(OH) CO₂H only
B) CH₃CH(OH) CO₂H primarily but some H₃O⁺ and CH₃CH(OH) CO₂^-
C) H₃O⁺ and CH₃CH(OH) CO₂^- only
D) H₃O⁺ and CH₃CH(OH) CO₂^- primarily but some CH₃CH(OH) CO₂H