WorksheetsEquilibria Revision
Total questions: 11
Worksheet time: 11mins
Name
Class
Date
1.
What are the two factors to look for when determining if the reaction is at equilibrium?
a)
Forward reaction rate is faster than the reverse and concentrations are equal
b)
Forward and reverse reaction rates are equal and concentration is conctant
c)
Forward and revers reaction rates are equal and concentration is equal
d)
Forward reaction rate is faster than the reverse and concentration is equal
2.
Identify the incorrect statement about achieving equilibrium.
a)
achieved when product and reactant concentrations are equal
b)
achieved when forward and reverse reaction rates are same
c)
achieved when concentration of reactants is stable/constant
d)
achieved when concentration ratio of reactants to products becomes stable, thus fixing the equilibrium constant (equilibrium position)
3.
This symbol indicates that a reaction is ____________
a)
reversible
b)
irreversible
4.
For the reaction...
SO2 + O2 <=> SO3
If the concentration of SO2 is increased, the equilibrium position of the reaction will shift ___________.
SO2 + O2 <=> SO3
If the concentration of SO2 is increased, the equilibrium position of the reaction will shift ___________.
a)
to the left
b)
to the right
c)
to the left and right
d)
neither left nor right
5.
For the reaction...
SO2 + O2 <=> SO3
If the equilibrium position shifts to the right, the concentration of O2 will ___________.
SO2 + O2 <=> SO3
If the equilibrium position shifts to the right, the concentration of O2 will ___________.
a)
increase
b)
decrease
c)
remain the same
d)
double
6.
For the reaction...
N2 + O2 <=> 2NO
If O2 is removed, the concentration of N2 will _______.
N2 + O2 <=> 2NO
If O2 is removed, the concentration of N2 will _______.
a)
increase
b)
decrease
c)
remain the same
d)
double
7.
For the reaction...
N2 (g) + 3 H2 (g) <=> 2 NH3 (g)
If the pressure in the system is increased, which substance(s) will increase in concentration?
N2 (g) + 3 H2 (g) <=> 2 NH3 (g)
If the pressure in the system is increased, which substance(s) will increase in concentration?
a)
N2 (as 2 mol gas → 4 mol gas)
b)
H2 (as 2 mol gas → 4 mol gas)
c)
N2 and H2 (as 2 mol gas → 4 mol gas)
d)
NH3 (as 4 mol gas → 2 mol gas)
8.
For the reaction...
N2 + O2 <=> 2NO: Δ H = +182 kJ mol-1.
If the temperature is increased the equilibrium position will shift _______.
N2 + O2 <=> 2NO: Δ H = +182 kJ mol-1.
If the temperature is increased the equilibrium position will shift _______.
a)
to the left
b)
to the right
c)
to the left and right
d)
neither left nor right
9.
Le Chatelier's Principle states that....
If a (dynamic) equilibrium is disturbed by changing the conditions, the position of equilibrium................
If a (dynamic) equilibrium is disturbed by changing the conditions, the position of equilibrium................
a)
moves to increase the change
b)
moves to counteract the change
c)
does not change
10.
Changes in pressure will only affect substances that are in the __________ state.
a)
gaseous
b)
liquid
c)
solid
11.
For the reaction...
H2 (g) + Cl2 (g) <=> 2HCl (g) + heat
If the pressure in the system is increased, the equilibrium position will _______.
H2 (g) + Cl2 (g) <=> 2HCl (g) + heat
If the pressure in the system is increased, the equilibrium position will _______.
a)
shift to the left
b)
shift to the right
c)
not shift position at all as 2 mol gas <=> 2 mol gas
100 %
