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Worksheet 38: . Topic 9
Set C: Determining effect of stress Objective: To test your ability to determine changes to
equilibrium reaction when a stress is introduced into the reaction
Below, equilibrium reaction equation and different stresses to each reaction are given.
Determine changes in concentration, rate and shift to the reaction based on the equation and each stress
that are given. In the spaces, write “increases” or “decreases” For shift, write “left” or “right”.
Equation 1 : 2Cl2 + 2H2O < ======== > 4HCl + O2
20. Stress: Increasing the concentration of O2:
Concentration of HCl _______________ Rate of forward reaction____________
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Amount of H2O _______________
Rate of Reverse reaction ___________
Concentration of Cl2 _______________ Reaction will shift ________________
21. Stress: Increasing the concentration of Cl2
Concentration of HCl _______________ Rate of forward reaction____________
Amount of H2O _________________ Rate of Reverse reaction____________
Concentration of O2 _______________ Reaction will shift __________________
22. Stress: Decreasing the concentration of HCl
Concentration of O2 _______________ Rate of forward reaction_____________
Amount of H2O _______________
Rate of Reverse reaction ____________
Concentration of Cl2 _______________ Reaction will shift ________________
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Need help? Study Book Pg 213 – 218 Set 39 - 43
Equation 2: 2SO3(g) + heat < -==========- > 2SO2(g) + O2(g)
23. Stress: Increasing temperature (adding heat)
Concentration of SO3 _______________ Rate of forward reaction ____________
Concentration of SO2 _______________ Rate of reverse reaction ____________
Concentration of O2 _______________ Reaction will shift _________________
24. Stress: Decreasing temperature (removing heat)
Concentration of SO3 _______________ Rate of forward reaction ____________
Concentration of SO2 _______________ Rate of reverse reaction ____________
Concentration of O2 _______________ Reaction will shift _________________
25. Stress: Increasing pressure (decreasing volume)
Concentration of SO3 _______________ Rate of forward reaction ____________
Concentration of SO2 _______________ Rate of reverse reaction ____________
Concentration of O2 _______________ Reaction will shift _________________
Temperature (heat) _________________
80 Copyright © 2010 E3 Scholastic Publishing. All Rights Reserved. Survivingchem.com
Set C: Determining effect of stress Objective: To test your ability to determine changes to
equilibrium reaction when a stress is introduced into the reaction
Below, equilibrium reaction equation and different stresses to each reaction are given.
Determine changes in concentration, rate and shift to the reaction based on the equation and each stress
that are given. In the spaces, write “increases” or “decreases” For shift, write “left” or “right”.
Equation 1 : 2Cl2 + 2H2O < ======== > 4HCl + O2
20. Stress: Increasing the concentration of O2:
Concentration of HCl _______________ Rate of forward reaction____________
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Amount of H2O _______________
Rate of Reverse reaction ___________
Concentration of Cl2 _______________ Reaction will shift ________________
21. Stress: Increasing the concentration of Cl2
Concentration of HCl _______________ Rate of forward reaction____________
Amount of H2O _________________ Rate of Reverse reaction____________
Concentration of O2 _______________ Reaction will shift __________________
22. Stress: Decreasing the concentration of HCl
Concentration of O2 _______________ Rate of forward reaction_____________
Amount of H2O _______________
Rate of Reverse reaction ____________
Concentration of Cl2 _______________ Reaction will shift ________________
Teacher Preview Copy
Need help? Study Book Pg 213 – 218 Set 39 - 43
Equation 2: 2SO3(g) + heat < -==========- > 2SO2(g) + O2(g)
23. Stress: Increasing temperature (adding heat)
Concentration of SO3 _______________ Rate of forward reaction ____________
Concentration of SO2 _______________ Rate of reverse reaction ____________
Concentration of O2 _______________ Reaction will shift _________________
24. Stress: Decreasing temperature (removing heat)
Concentration of SO3 _______________ Rate of forward reaction ____________
Concentration of SO2 _______________ Rate of reverse reaction ____________
Concentration of O2 _______________ Reaction will shift _________________
25. Stress: Increasing pressure (decreasing volume)
Concentration of SO3 _______________ Rate of forward reaction ____________
Concentration of SO2 _______________ Rate of reverse reaction ____________
Concentration of O2 _______________ Reaction will shift _________________
Temperature (heat) _________________
80 Copyright © 2010 E3 Scholastic Publishing. All Rights Reserved. Survivingchem.com
