Problem 1
Which of the following theoretical factors increases the rate of a reaction? (a) increase collision frequency (b) increase collision energy (c) effective collision orientation
Problem 2
Which of the following theoretical factors decreases the rate of a reaction? (a) decrease collision frequency (b) decrease collision energy (c) ineffective collision orientation
Problem 5
State the effect on the rate of reaction for each of the following: (a) increase the concentration of a reactant (b) increase the temperature of the reaction (c) add a metal catalyst
Problem 6
State the effect on the rate of reaction for each of the following: (a) decrease the concentration of a reactant (b) decrease the temperature of the reaction (c) add an acid catalyst
Problem 8
The Haber Process uses a metal oxide catalyst to produce ammonia gas. Does the catalyst increase the amount of ammonia gas? Explain.
Problem 9
Phosphorus pentachloride is used in the electronics industry to manufacture computer chips. Draw the energy profile for the following reaction: $$ \mathrm{PCl}_{5}(g)+\text { heat } \rightleftarrows \mathrm{PCl}_{3}(g)+\mathrm{Cl}_{2}(g) $$
Problem 10
Boron trifluoride is used in the electronics industry to manufacture computer chips. Draw the energy profile for the following reaction: $$ 2 \mathrm{~B}(s)+3 \mathrm{~F}_{2}(g) \rightleftarrows 2 \mathrm{BF}_{3}(g)+\text { heat } $$
Problem 11
Draw the energy profile for the following exothermic reaction: $$ \mathrm{H}_{2}(g)+\mathrm{Cl}_{2}(g) \rightleftarrows 2 \mathrm{HCl}(g) $$ Label the axes Energy and Progress of reaction and indicate the reactants, products, transition state, activation energy, and energy of reaction.
Problem 12
Draw the energy profile for the following endothermic reaction: $$ \mathrm{H}_{2}(g)+\mathrm{I}_{2}(g) \rightleftarrows 2 \mathrm{HI}(g) $$
Problem 14
State the effect of a catalyst on the heat of reaction, \(\Delta H\).
