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Which of the Following Equations Is Valid for a 0

Question 37

Multiple Choice

Which of the following equations is valid for a 0.10 M solution of formic acid, HCO2H?
HCO2H(aq) + H2O(l) Which of the following equations is valid for a 0.10 M solution of formic acid, HCO<sub>2</sub>H? HCO<sub>2</sub>H(aq) + H<sub>2</sub>O(l) HCO<sub>2</sub><sup>-</sup>(aq) + H<sub>3</sub>O<sup>+</sup>(aq)   K<sub>a</sub> = 1.8 x 10<sup>-4</sup> A) [H<sub>3</sub>O<sup>+</sup>] < [OH<sup>-</sup>] B) [H<sub>3</sub>O<sup>+</sup>]<sub> </sub>= [HCO<sub>2</sub>H] C) [H<sub>3</sub>O<sup>+</sup>]<sub> </sub>= [HCO<sub>2</sub><sup>-</sup>] D) [H<sub>3</sub>O<sup>+</sup>] = [H<sub>2</sub>O] E) [OH<sup>-</sup>] = [H<sub>2</sub>O] HCO2-(aq) + H3O+(aq)   Ka = 1.8 x 10-4


A) [H3O+] < [OH-]
B) [H3O+] = [HCO2H]
C) [H3O+] = [HCO2-]
D) [H3O+] = [H2O]
E) [OH-] = [H2O]

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