Chemistry 12 Worksheet 2-2 - Lechatelier'S Principle - Chemical Equilibrium Worksheet Page 5
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7Chemistry 12
Unit 2 - Chemical Equilibrium
gas will first get darker and then lighter in colour
14. Explain why a syringe containing NO
2
when compressed. Use the equilibrium equation:
N
O
+ heat
2NO
2
4(g)
2(g)
colourless
brown
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15. Explain why a flask containing NO
will get lighter in colour when put into ice water. Use
2
the equation:
N
O
+ heat
2NO
2
4(g)
2(g)
colourless
brown
__________________________________________________________________
__________________________________________________________________
16. Given the following graph showing the concentrations of species A, B and C,
state what
changes in temperature or concentration are responsible for each of the shifts shown on
the graph. The equilibrium equation is:
∆ ∆ H = -65 kJ
A
+ B
C
(g)
(g )
(g)
a) At time I, the
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b) At time II, the
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c) At time III, the
______________________________________________________
d) At time IV, the
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Worksheet 2-2 - LeChatelier's Principle
Page 5
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