The dissociation constant of formic acid is 0.00024. The hydrogen ion concentration in 0.002 m - HCO — Ionic Equilibrium Chemistry Question
Question
The dissociation constant of formic acid is 0.00024. The hydrogen ion concentration in 0.002 m - HCOOH solution is nearly
Answer: C
💡 Solution & Explanation
Ka = 2.4*10^-4, C = 0.002 M. Using quadratic: [H+]^2 + 2.4*10^-4 [H+] - 4.8*10^-7 = 0. Solving: [H+] = 5.8*10^-4 M.
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