9. If the reaction in Question #8 is endothermic, what happens when the following changes are made to the system? (State your answers as a shift, choose: to Product, to Reactants, No Change) a) Temperature increased. b) Temperature decreased. c) H2S concentration increased. d) H2 concentration increased. e) A catalyst is added.

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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#9 part E

7. Using what you learned in Question #6, find K for both of the previou:
reactions using the concentrations given below:
a) [N2O3] = 2.1x10-6 M, [N0] = 0.076 M, [NO2] = 5.8x10-3 M
b) [Co2+] = 0.82 M, [CI ] = 0.88 M, [CoCl4²-] = 0.50 M
8. At high temperatures (in this case 800°C), hydrogen sulfide exists in an
equilibrium with hydrogen gas and disulfur (S2 molecules, instead of the
normal S8 rings found in the solid):
2 H2S(g) = 2 H2(g) + S2(g)
If the equilibrium constant is K = 1.7×10-7, and the equilibrium
concentrations are [H2S] = 1.0 M, and [H2] = 4.9×10-3 M, what is the
concentration of disulfur (S2)?
9. If the reaction in Question #8 is endothermic, what happens when the
following changes are made to the system? (State your answers as a
shift, choose: to Product, to Reactants, No Change)
a) Temperature increased.
b) Temperature decreased.
c) H2S concentration increased.
d) H2 concentration increased.
e) A catalyst is added.
10. Write the formula for sodium chloride, without making any mistakes.
Transcribed Image Text:7. Using what you learned in Question #6, find K for both of the previou: reactions using the concentrations given below: a) [N2O3] = 2.1x10-6 M, [N0] = 0.076 M, [NO2] = 5.8x10-3 M b) [Co2+] = 0.82 M, [CI ] = 0.88 M, [CoCl4²-] = 0.50 M 8. At high temperatures (in this case 800°C), hydrogen sulfide exists in an equilibrium with hydrogen gas and disulfur (S2 molecules, instead of the normal S8 rings found in the solid): 2 H2S(g) = 2 H2(g) + S2(g) If the equilibrium constant is K = 1.7×10-7, and the equilibrium concentrations are [H2S] = 1.0 M, and [H2] = 4.9×10-3 M, what is the concentration of disulfur (S2)? 9. If the reaction in Question #8 is endothermic, what happens when the following changes are made to the system? (State your answers as a shift, choose: to Product, to Reactants, No Change) a) Temperature increased. b) Temperature decreased. c) H2S concentration increased. d) H2 concentration increased. e) A catalyst is added. 10. Write the formula for sodium chloride, without making any mistakes.
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