The following reaction is in equilibrium in lake water: HCO3-(aq)+H+(aq) --> H2CO3(aq) Predict the change in the reaction quotient, Q, for each disturbance below and use that prediction to explain how the equilibrium is shifted by the stress.

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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The following reaction is in equilibrium in lake water:

HCO3-(aq)+H+(aq) --> H2CO3(aq)

Predict the change in the reaction quotient, Q, for each disturbance below and use that prediction to explain how the equilibrium is shifted by the stress.

  1. NaHCO3 is added to the lake.

    a. equilibrium shifts to the right
    b. equilibrium shifts to the left
    c. equilibrium doesn't change

     

  2. H2CO3 is added to the lake.

    a. equilibrium shifts to the right
    b. equilibrium shifts to the left
    c. equilibrium doesn't change

     

  3. NaOH is added to the lake.

    a. equilibrium shifts to the right
    b. equilibrium shifts to the left
    c. equilibrium doesn't change
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