Energy Test Review

Which of the following statements about a catalyst is true?

At equilibrium,

If the surface area of reactants is larger,

The collision theory states that atoms, ions, and molecules must collide in order to react.

How many grams of H2SO4 are present in 0.70 L of a 0.33 M H2SO4 solution?

If the temperature of the reactants is increased, the rate of the reaction will decrease.

If the temperature of the reactants is lower,

Walking through a crowded hallway at school, you're more likely to bump into another person. This analogy refers to

A reaction in which the products can react to re-form the reactants is

What is the molarity of a solution that contains 125 g CaCl2 in 4.00 L solution?

At equilibrium, the total amount of the product(s)

If the temperature at which a reaction occurs increases, the number of collisions decreases.

An increase in the concentration of reactants causes the rate of the reaction to                                                          

Which of the following is a measure of the average kinetic energy of the particles in a sample of matter?

The diagram shows a reaction that is a(n)

Adjusting the concentrations of either the reactants or products in a reaction puts stress on the equilibrium.

A single piece of newspaper burns faster than a shredded piece.

In the forward endothermic reaction of a system at equilibrium, equilibrium shifts                                                        

What mass of anhydrous cobalt II chloride is needed in order to make 650.00 mL of a 4.00M cobalt II chloride solution?

Key factors influencing reaction rates include pressure, concentration, surface area, temperature & catalysts.

A/An _____ lowers the activation energy required for a reaction to take place.

For an exothermic reaction, the products

In order for a reaction to occur, the reactants must have

In the rxn SO2Cl2 <--> SO2+ Cl2 + heat, what happens when Cl2 is added to the equilibrium mixture at constant volume?

In the forward exothermic reaction of a system at equilibrium, equilibrium shifts ________ when temperature is lowered

Orientation of molecules during a reaction does not affect the production of products.

What is the molarity of a solution that contains 0.202 mol KCl in 7.98 L solution?

When the temperature of a substance increases, what happens to the speed of the particles?

A reaction is at equilibrium when the rate of the forward and reverse reactions are unequal.

If potential energy of reactants is greater than the potential energy of the products, the reaction is a ___ reaction

When changes are made to a system at equilibrium, the system shifts to a new equilibrium position.

Which of the following will react most slowly?

A NaOH solution contains 76.0g of NaOH, and its concentration is 0.555 M. What is its volume?

If the pressure on the equilibrium system 2CO(g) + O2(g) <-->  2CO2(g) is increased,

In an endothermic reaction, the total energy at the beginning of the reaction is

The diagram shows a reaction that is a(n)