A vessel at equilibrium contains SO3, SO2 and O2, now some helium gas is added so that total pressure increases while temperature and volume remain constant. According to Le Chatelier Principle the dissociation of SO32-
1.decreases
2.remain constant
3.increases
4.change unpredictably
For a reversible reaction the concentration of the reactants are doubled, then the equilibrium constant
1.becomes one-fourth
2.is doubled
3.is halved
4.remains the same
In which of the following cases does the reaction go farthest to completion?
1.K = 1
2.K = 10
3.K = 10-2
4.K = 102
Le Chatelier Principle is applicable to
1.heterogeneous reaction
2.homogeneous reaction
3.irreversible reaction
4.system in equilibrium
The role of a catalyst in a reversible reaction is to
1.alter the equilibrium constant of the reaction
2.increase the rate of the forward reaction
3.allow the equilibrium to be achieved quickly
4.decrease the rate of backward reaction
The equilibrium between water and its vapour in an open vessel
1.can be achieved
2.depends upon pressure
3.cannot be achieved
4.depends upon temperature
The chemical equilibrium of a reversible reaction is not influenced by
1.temperature
2.pressure
3.catalyst
4.concentration
The equilibrium constant of a reaction is 300. If the volume of reaction flask is tripled the equilibrium constant is
1.300
2.600
3.900
4.100
When a catalyst is added to a reversible reaction in equilibrium state the value of the equilibrium constant
1.increases
2.decreases
3.does not change
4.becomes zero