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Lesson 1: Chemical Reaction Rates and Le Chatelier’s Principle — Picture questions (exam style)

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1.
For the equilibrium shown (ΔH = -92 kJ), what is the effect of lowering temperature on Kc and on the position of equilibrium?
For the equilibrium shown (ΔH = -92 kJ), what is the effect of lowering temperature on Kc and on the position of equilibrium?
Kc unchanged, equilibrium shift: no shift
Kc decreases, equilibrium shift: no shift
Kc unchanged, equilibrium shift: forward
Kc increases, equilibrium shift: forward
2.
For the equilibrium shown (ΔH = 57 kJ), what is the effect of increasing pressure on Kc and on the position of equilibrium?
For the equilibrium shown (ΔH = 57 kJ), what is the effect of increasing pressure on Kc and on the position of equilibrium?
Kc unchanged, equilibrium shift: backward
Kc decreases, equilibrium shift: forward
Kc unchanged, equilibrium shift: forward
Kc increases, equilibrium shift: backward
3.
For the equilibrium shown (ΔH = -197 kJ), what is the effect of increasing pressure on Kc and on the position of equilibrium?
For the equilibrium shown (ΔH = -197 kJ), what is the effect of increasing pressure on Kc and on the position of equilibrium?
Kc unchanged, equilibrium shift: no shift
Kc decreases, equilibrium shift: no shift
Kc unchanged, equilibrium shift: forward
Kc increases, equilibrium shift: backward
4.
For the equilibrium shown (ΔH = 88 kJ), what is the effect of raising temperature on Kc and on the position of equilibrium?
For the equilibrium shown (ΔH = 88 kJ), what is the effect of raising temperature on Kc and on the position of equilibrium?
Kc decreases, equilibrium shift: backward
Kc increases, equilibrium shift: forward
Kc decreases, equilibrium shift: forward
Kc unchanged, equilibrium shift: backward
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