Le Chatelier's Principle
Exercises
The above reaction takes place
in a 4 litre sealed container and allowed to proceed to equilibrium. The
table below indicates the changes that occur to the equilibrim mixture.
Fill in the table and suggest how the equilibrium will shift to oppose
the changes.
| Change |
Mass
of methane |
Mass
of water |
Mass
of carbon dioxide |
| Decrease
in volume |
|
|
|
| Increase
in pressure by the addition of helium gas |
|
|
|
| Increase
in temperature |
|
|
|
| Addition
of hydrogen gas |
|
|
|
| Increase
in volume |
|
|
|
| Removal
of hydrogen |
|
|
|
| Decrease
in temperature |
|
|
|
The above reaction takes place in a 1litre sealed container and allowed to proceed to equilibrium. The table below indicates the changes that occur to the equilibrim mixture. Fill in the table and suggest how the equilibrium will shift to oppose the changes.
|
Change
|
Mol
of acetic acid
|
Mol
acetate ions
|
Mol
of hydronium ion
|
|
Addition
of 2 lires of water
|
|
|
|
|
Water
is allowed to evaporate
|
|
|
|
|
Addition
of NaOH
|
|
|
|
Some chemists believe that life started in clay lakes that periodically dried out. Amino acids undergo condensation polymerisation to form proteins according to the equation below.
amino acid 1 + amino acid 2 
dipeptide + water.
What would happen to the equilibrium yield if this reaction occured in solution?
Uisng Le Chatelier's principal, explain why chemistst believe that life may have started in clay lakes that dried out?