Chemistry S.3.4

Question 1

For the reaction CO + H2–><- CH4 +H2O + heat, equilibrium would favor the reactant side if which of the following occurs?
A. H2O is added
B. The temperature decreases
C. CO is added
D. CH4 is removed

Question 2

Which of the following would increase the forward rate of this gas phase reaction?
CO + H2 –><- CH4 + H2O + heat

A. Adding CO
B. Increasing the temperature
C. Adding H2O
D. Increasing the pressure

Question 3

A substance that lowers the activation energy is which of the following?
A. Reactant
B. Product
C. Catalyst
D. Time

Question 4

Which of the following would slow down a reaction rate?
A. Increasing the temperature
B. Adding enzymes
C. Decreasing the pressure
D. Decreasing the reactants

Question 5

An enzyme does which of the following to a chemical reaction?

A. Shifts the reaction to the right
B. Shifts the reaction to the left
C. Speeds up both the forward and reverse reactions
D. Changes the reaction from one that is at equilibrium to one that goes to completion