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WorksheetsChemical Equilibrium 1
Total questions: 20
Worksheet time: 12mins
This symbol indicates that a reaction is ____________
reversible
irreversible
constant
same rate
At elevated temperatures ammonium carbonate, NH2COONH4, is in equilibrium with NH3 and CO2 according to the equation;
NH2COONH4(s) ↔ 2 NH3(g) + CO2(g)
What is the equilibrium expression for this reaction?
K = 2 [NH3][CO2]
[NH2COONH4]
K = [NH3]2[CO2]
[NH2COONH4]
K = 2 [NH3][CO2]
K = [NH3]2[CO2]
What kind of equilibrium does the reaction below show?
H2(g) +I2(g) ↔ 2HI(g)
Heterogeneous equilibrium, all the reactants and products are in the same physical state.
Homogeneous equilibrium, all the reactants and products are in the same physical state.
Heterogeneous equilibrium, the reactants and products are present in more than one physical state
Homogeneous equilibrium, the reactants and products are present in more than one physical state
Identify the incorrect statement about achieving equilibrium.
achieved when product and reactant concentrations are equal
achieved when forward and reverse reaction rates are same
achieved when concentration of reactants is stable/constant
achieved when concentration ratio of reactants to products becomes stable, thus fixing the equilibrium constant (equilibrium position)
The forward reaction points towards the __________.
What kind of equilibrium does the reaction below show?
H2(g) +I2(g) ↔ 2HI(g)
Heterogeneous equilibrium, all the reactants and products are in the same physical state.
Homogeneous equilibrium, all the reactants and products are in the same physical state.
Heterogeneous equilibrium, the reactants and products are present in more than one physical state
Homogeneous equilibrium, the reactants and products are present in more than one physical state
2 NO(g) + O2(g) ⇌ 2 NO2(g)
The Kc expression for the reaction 2NH3 (g) ⇌ N2 (g)+ 3H2(g)
Why is equilibrium called a dynamic state?
Chemists try to convert as much reactants as possible into products.
The reactions at equilibrium continue to take place once equilibrium is established.
The products of a forward reaction are favored, so equilibrium lies to the right.
All chemical reactions are considered to be reversible under suitable conditions.
At what time (in seconds) is equilibrium established?
0 second
1 second
5 seconds
10 seconds
A complete reaction is in which:
All the reactants convert into products
All the reactants do not convert into products
Half reactants convert into products
only 10% reactants convert into products
