At Equilibrium
At equilibrium, the concentrations of reactants and products do this over time.
What is remain the same?
This symbol represents the equilibrium constant.
What is Keq?
Adding more reactant causes equilibrium to shift in this direction.
What is toward the products?
Collisions must have enough of this to produce a reaction.
What is energy?
Increasing concentration usually has this effect on collision frequency.
What is increases it?
When a reaction reaches a state of dynamic equilibrium, this will be equal.
What are the rates of the forward and reverse reactions?
In an equilibrium expression, product concentrations are placed in this part of the fraction.
What is the numerator?
Removing a product causes equilibrium to shift in this direction.
What is toward the products?
Raising this for gases usually increases reaction rate because particles are forced closer together.
What is pressure?
Chewing food speeds digestion by increasing this.
What is surface area?
Three reversible reactions have Keq values of 0.050, 2.65, and 13,000. Of these three, this is the only one that has more reactants than products at equilibrium.
What is 0.050?
For the reaction H2(g) + I2(g) ⇌ 2HI(g), this quantity appears squared in the equilibrium expression.
What is [HI]?
If delta H has a value of +45 kJ/mol, decreasing temperature shifts equilibrium in this direction.
What is toward the reactants?
Grinding a solid reactant into powder speeds up a reaction by increasing this property.
What is surface area?
A substance that speeds up a reaction without being consumed is called this.
What is a catalyst?
In equilibrium problems, these states of matter are omitted because their concentrations do not change.
What are solids and liquids?
When the reaction 2NaNO3(aq) + H2SO4(l) ⇄ Na2SO4(s) + 2HNO3(l) reaches equilibrium, the concentration of sodium nitrate is 2.67 M. The equilibrium constant, Keq, must have this value.
What is 0.140?
Increasing pressure in a gaseous equilibrium shifts the reaction toward the side with these.
What are fewer gas particles?
Enzymes are biological examples of these.
What are catalysts?
A substance that slows down or blocks a reaction is called this.
What is an inhibitor?
A reaction with a very large equilibrium constant is said to favor these.
What are the products?
The equilibrium constant changes only when this variable changes.
What is temperature?
Adding a catalyst to a reaction at equilibrium will cause this type of shift.
What is no shift?
Particles moving faster due to higher temperature possess more of this type of energy.
What is kinetic energy?
The initial rate of consumption of O2 is 0.60 moles per second. The initial rate of formation for carbon dioxide is this. 2 C2H2 + 5 O2 --> 4 CO2 + 2 H2O
What is 0.48 moles per second?