1. a reaction in a solution would proceed slowest when -
a. water is added and it is cooled.
b. water is added and it is warmed.
c. reactants are added and it is cooled.
d. reactants are added and it is warmed.
2. many industrial reactions, like the reaction of nitrogen gas (n2) and hydrogen gas (h2) to produce ammonia for fertilizers, have a very slow reaction rate. what is one method that would speed up this reaction?
a. lower the pressure in the reaction chamber
b. increase the volume of the reaction chamber
c. increase the temperature in the reaction chamber
d. decrease the temperature in the reaction chamber
3. reaction rate depends on how many molecules come into contact with each other with enough energy to react. how would you increase the number of molecules that come in contact with each other in a reaction between gases?
a. increase volume
b. increase pressure
c. decrease pressure
d. decrease temperature
4. sulfuric acid (a component of acid rain) reacts with limestone (calcium carbonate) to produce calcium sulfate and carbon dioxide. this damages buildings and statues made of limestone.

which solution of sulfuric acid will damage these structures more quickly?
a. 0.001%
b. 0.005%
c. 0.010%
d. 0.015%
5. many industrial reactions, like the reaction of nitrogen gas (n2) and hydrogen gas (h2) to produce ammonia for fertilizers, have a very slow reaction rate. what is one method that would speed up this reaction?
a. add a catalyst to the reaction chamber.
b. lower the pressure in the reaction chamber.
c. increase the volume of the reaction chamber.
d. decrease the temperature in the reaction chamber.