Calculate the H₃O⁺ concentration in 0.0010 M HCl. A)1.0 × 10^-2 M B)1.0 × 10^-3 M C)1.0 × 10³ M D)1.0 × 10² M E)3.0 M

Question

Quizplus · Accepted Answer

H₃O⁺ can be simplified to H2S + HPO4- + H2O. Using the acidic dissociation constants, we can calculate the concentrations of the individual species at equilibrium. In 0.0010 M HCl, the concentration of H+ ions is 0.0010 M. Using this, we can calculate the concentration of H2S, HPO4-, and H2O to be 1.0 × 10^-3, 8.2 × 10^-10, and 55.5 M, respectively. Therefore, the concentration of H₃O⁺ is the concentration of H2S plus the concentration of HPO4-, which is equal to 1.0 × 10^-3 + 8.2 × 10^-10 = 1.0 × 10^-3 M. The answer is B, 1.0 × 10^-3 M.

Calculate the H3O+ Concentration in 0.0010 M HCl

Calculate the H₃O⁺ Concentration in 0.0010 M HCl