Chem 116 ASU Final Exam Review questions with answers

Chem 116 ASU Final Exam Review questions |\ |\ |\ |\ |\ |\ |\




with answers |\




A catalyst accelerates a reaction because:
|\ |\ |\ |\ |\




A.) it decreases the number of molecules with energy equal or
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\


greater than the activation energy |\ |\ |\ |\




B.) it lowers the activation energy for the reaction
|\ |\ |\ |\ |\ |\ |\ |\




C.) it increases the number or collisions between molecules
|\ |\ |\ |\ |\ |\ |\ |\




D.) it supplies energy to reactant Molecules. - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\


ANSWERS ✔✔B.) it lowers the activation energy for the reaction
|\ |\ |\ |\ |\ |\ |\ |\ |\




Consider the Reaction: |\ |\ |\




8A(g) + 5B(g) --> 8C(g) + 6D (g)
|\ |\ |\ |\ |\ |\ |\ |\




If C is increasing at a rate of 4.0 M/s, at what rate is D changing?
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\




A.) 4.9 M/s
|\ |\




B.) 3.0 M/s
|\ |\




C.) 2.0 M/s
|\ |\




D.) 6.0 M/s
|\ |\




E.) 4.0 M/s - CORRECT ANSWERS ✔✔B.) 3.0 M/s
|\ |\ |\ |\ |\ |\ |\ |\

, A good catalyst will speed p the forward reaction but not affect
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\


the speed of the reverse reaction.
|\ |\ |\ |\ |\ |\




True or False? - CORRECT ANSWERS ✔✔False
|\ |\ |\ |\ |\ |\




H2(g) + MgC03 (s) <---> H20(g) + Co2(g)
|\ |\ |\ |\ |\ |\ |\




what will happen to the amount of volume in the container?
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\




A.) Amount of carbon dioxide present will increase
|\ |\ |\ |\ |\ |\ |\




B.) Amount of carbon dioxide present will decrease
|\ |\ |\ |\ |\ |\ |\




C.) the amount of carbon dioxide will be unchanged
|\ |\ |\ |\ |\ |\ |\ |\ |\




D.) the equilibrium constant will have to decrease to compensate
|\ |\ |\ |\ |\ |\ |\ |\ |\




E.) More info is needed - CORRECT ANSWERS ✔✔A.) Amount of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\


carbon dioxide present will increase
|\ |\ |\ |\




2NaHCO3 (s) <---> Na2CO3(s) + H20(g) + Co2 (g) |\ |\ |\ |\ |\ |\ |\ |\




what happens to the system when sodium carbonate is added?
|\ |\ |\ |\ |\ |\ |\ |\ |\




A.) the concentration of carbon dioxide will increase
|\ |\ |\ |\ |\ |\ |\




B.) the concentration of carbon dioxide will decrease
|\ |\ |\ |\ |\ |\ |\




C.) the concentration of carbon dioxide will be unchanged
|\ |\ |\ |\ |\ |\ |\ |\




D.) the amounts of all the products will be greater once
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\


equilibrium is reattained |\ |\