رد: شرح للكيمياء و أسئلة مراجعة
6. For the following reaction at equilibrium, which choice gives a change that will shift the position of equilibrium to favor formation of more products?
2NOBr(g) 2NO(g) + Br2(g), Hºrxn = 30 kJ/mol
A. Increase the total pressure by decreasing the volume.
B. Add more NO.
C. Remove Br2.
D. Lower the temperature.
7. For the following reaction at equilibrium in a reaction vessel, which one of these changes would cause the Br2 concentration to decrease?
2NOBr(g) 2NO(g) + Br2(g), Hºrxn= 30 kJ/mol
A. Increase the temperature.
B. Remove some NO.
C. Add more NOBr.
D. Compress the gas mixture into a smaller volume.
8. For the reaction at equilibrium 2SO3 2SO2 + O2 (Hºrxn= 198 kJ/mol), if we increase the reaction temperature, the equilibrium will
A. shift to the right.
B. shift to the left.
C. not shift.
D. The question cannot be answered because the equilibrium constant is not given.
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