Equilibrium review(Correctly solved)
chemical equilibrium correct answersis achieved when..
1) the rates of the forward and reverse reactions are equal
2)the concentrations of the reactants and products remain constant
N2O4(g)<==> N2O2(g)
equilibrium correct answers-the extent of a reaction
-In stoichiometry we talk about theoretical
yields, and the many reasons actual yields
may be lower.
-Another critical reason actual yields may be
lower is the **reversibility of chemical
reactions: some reactions may produce only
70% of the product you may calculate they
ought to produce
-equilibrium looks at the extent of a chemical
reaction.
-Equilibrium is a state in which there are no observable changes as time goes by.
-rates equal forward and reverse (rxn still occurs even though nothing observable is changing)
physical equilibrium correct answersH2O(l) <==> H2O (g)
Concept of eq correct answers-As the substance warms it begins to decompose:
N2O4(g) → 2NO2(g)
-When enough NO2 is formed, it can react to form N2O4:
2NO2(g) → N2O4(g).
-At equilibrium, as much N2O4 reacts to form NO2 as NO2 reacts to re-form N2O4
as the rxn progresses
[A] decreases to a constant
[B] incresases from zero to a constant
-A and B are constant when eq is acheived
[A] <==> [B]
-at no point at eq are the concentrations equal (flat lines are the same)
-when the ratio of concentrations are no longer changing (table)
double arrows correct answers-implies the process is dynamic (changing/still occuring)
v. static (rxn stopped)
graph eq correct answers-flat lines means its reached equilibrium
-lines dont always cross
forward rxn correct answers-as it proceeds, the concentrations of the products build up
-as it proceeds, the forward rxn slows down
chemical equilibrium correct answersis achieved when..
1) the rates of the forward and reverse reactions are equal
2)the concentrations of the reactants and products remain constant
N2O4(g)<==> N2O2(g)
equilibrium correct answers-the extent of a reaction
-In stoichiometry we talk about theoretical
yields, and the many reasons actual yields
may be lower.
-Another critical reason actual yields may be
lower is the **reversibility of chemical
reactions: some reactions may produce only
70% of the product you may calculate they
ought to produce
-equilibrium looks at the extent of a chemical
reaction.
-Equilibrium is a state in which there are no observable changes as time goes by.
-rates equal forward and reverse (rxn still occurs even though nothing observable is changing)
physical equilibrium correct answersH2O(l) <==> H2O (g)
Concept of eq correct answers-As the substance warms it begins to decompose:
N2O4(g) → 2NO2(g)
-When enough NO2 is formed, it can react to form N2O4:
2NO2(g) → N2O4(g).
-At equilibrium, as much N2O4 reacts to form NO2 as NO2 reacts to re-form N2O4
as the rxn progresses
[A] decreases to a constant
[B] incresases from zero to a constant
-A and B are constant when eq is acheived
[A] <==> [B]
-at no point at eq are the concentrations equal (flat lines are the same)
-when the ratio of concentrations are no longer changing (table)
double arrows correct answers-implies the process is dynamic (changing/still occuring)
v. static (rxn stopped)
graph eq correct answers-flat lines means its reached equilibrium
-lines dont always cross
forward rxn correct answers-as it proceeds, the concentrations of the products build up
-as it proceeds, the forward rxn slows down
