A monoprotic weak acid, HA, dissociates in water according to the reaction HA(aq) + H,O(1) =H,O*(aq) + A¯(aq) The equilibrium concentrations of the reactants and products are [HA] = 0.140 M, [H,O*] = 4.00 × 10-4 M, and A = 4.00 x 10-4 M. Calculate the K value for the acid HA.

Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter18: Principles Of Chemical Reactivity: Entropy And Free Energy
Section: Chapter Questions
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A monoprotic weak acid, HA, dissociates in water according to the reaction
HA(aq) + H,O(1) =H,0*(aq) + A¯(aq)
The equilibrium concentrations of the reactants and products are [HA] = 0.140 M, [H,O*] = 4.00 × 10-4 M, and
[A = 4.00 x 10-4 M. Calculate the Ka value for the acid HA.
K =
Transcribed Image Text:A monoprotic weak acid, HA, dissociates in water according to the reaction HA(aq) + H,O(1) =H,0*(aq) + A¯(aq) The equilibrium concentrations of the reactants and products are [HA] = 0.140 M, [H,O*] = 4.00 × 10-4 M, and [A = 4.00 x 10-4 M. Calculate the Ka value for the acid HA. K =
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