Answered: The dissociation of the weak acid,…

Chemistry & Chemical Reactivity

9th Edition

ISBN:9781133949640

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter15: Principles Of Chemical Reactivity: Equilibria

Section: Chapter Questions

Problem 3PS: Kc = 5.6 1012 at 500 K for the dissociation of iodine molecules to iodine atoms. I2(g) 2 I(g) A...

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4) The dissociation of the weak acid, nitrous acid, HNO2, takes place according to the reaction:

HNO2 (aq) ⇌ H+
(aq) + NO2
–
(aq) K=7.2 X 10-4

When 1.00 mole of HNO2 is added to 1.00 L of water, the H+ concentration at equilibrium is 0.0265 M.
A) Calculate the value of Q if 1.00 L of water is added?

B) How will reaction shift if 1.00 L of water is added?

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You did not divide by any reactants for Q. Is that becuase the concentration of HNO2 is 1 M? ...and if so, why would it not be 0.5M?

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