Vocabulary
A reaction when the products can react to reform the reactants?
reversible reaction
The expression for the following equation
aA(g)+bB(g)<---->cC(g)+dD(g)
What is
[C]c [D]d / [A]a [B]b = K
The direction that is favored when heat is added, on the product side, to a system at equilibrium?
endothermic (shift left)
The effect when there is an increase in pressure on a system
System attempts to alleviate pressure by shifting equilibrium to the side that has less moles.
The effect of increasing the concentration of A?
A+B<--->2C
What is it will increase the concentration of the product in A+B<--->2C (shifts right)
The rate of the forward reaction equals the rate of the reverse reaction and concentrations of its products and reactants remain unchanged?
Chemical Equilibrium
The expression from the balanced equation below using the chemical formulas? 2SO2 (g)+O2 (g) <--->2SO3 (g)
[SO3]2 / [SO2]2[O2] = K
The direction that is favored when heat is removed from a system on the product side at equilibrium?
exothermic (shifts right)
The factors needed to determine whether pressure changes will effect the system
What is gases must be present and moles on either side of the system are different
The effect of a catalyst on equilibrium
The mathematical expression of the ratio between products and reactants not yet at equilibrium.
Reaction Quotient: Q
The K eq expression of the following reversible reaction that has reached equilibrium at 220 degrees Celsius? N2+3H2<---> 2 NH3
[NH3]2 / [N2] [H2]3
The effect of equilibrium when the temperature is increased? N2(g)+ 3H2(g)<---> 2NH3(g) + 22 kcal
shifts left
The effect of a decrease in pressure in the following reaction? 2SO2(g)+O2(g)<--->2SO3(g)
What is shifts the reaction to the left
The effect of adding more AB or removing A or B in A+B<--->AB
What is it will favor the reverse direction A+B<--->AB (shifts left)
The ratio of mathematical product of concentrations of substances formed at equilibrium to product of concentrations of reacting substances?
Equilibrium Constant: Keq
The significance if the K eq value is greater than 1?
The forward reaction is favored before an equilibrium is reached.
What will change the value of the equilibrum constant? changing the temperature of the system
Changing the temperature of the system
The effect on pressure if we increase the volume of a closed container?
What is it decreases the pressure
The effect of changing the concentrations of the product, on the Keq value?
What is it will not change the value of Keq?
When a system at equilibrium is subjected to a stress and shifts in the direction that will relieve the effect of the stress?
Le Chatelier's Principle
The expression of the following balanced equation? 2C(s)+O2(g)<-->2CO(g)
[CO]2 / [O2]
The effect on equilibrium if the temperature is decreased in the following reaction?
2SO2(g)+O2(g)<--->2SO3(g)+heat
shifts right
The effect of an increase in pressure on the following reaction? N2(g)+O2(g)<--->2NO(g)
What is it will not affect the equilibrium N2(g)+O2(g)<--->2NO(g)
The effect of adding more reactants or decreasing product?
What is it shifts equilibrium to the right