14. The first graph below represents the energy level diagram for an uncatalyzed reaction. Which other graph could represent the same reaction but catalyzed? Extent of reaction Extent of reaction Extent of reaction Extent of reaction A B C

When the amount of substrates (reactants) increases, the reaction rate changes differently in catalyzed and non-catalyzed reactions. Describe this.

For the reaction shown, what is true for the rate and extent of the reaction with an increase in temperature? H₂O+ OH + H₂O

Increasing the temperature of a reaction increases the reaction rate and the rate constant. Select one: O True O False

Which of the following is not an example of heterogeneous catalysis?     a) 2O3(g) → 3O2(g) has a catalyst of Cl(g) b) CO(g) + 3H2(g) → CH4(g)+H2O(g) has a catalyst of Co(s) c) C2H4(g) + H2(g) → C2H6(g) has a catalyst of Ni(s) d) 2CO(g) + 2NO(g) → 2CO2(g)+N2(g) has a catalyst Rh(s)

One of the most important inventions of the 20th century was refrigeration for food. Using the relationship between temperature and reaction rate, explain why this household appliance continues to be so important.

How does the amount of reactant account for the differences in the rate of reaction?

Which of the following is true?   Decreasing the activation energy decreases the reaction rate. Decreasing the activation energy increases the reaction rate. The activation energy of an exothermic reaction is negative. There is no relationship between activation energy and reaction rate.

(a) Select all of the correct statements about reaction rates from the choices below. The lower the rate of a reaction the longer it takes to reach completion. Solid catalysts increase reaction rates as their surface areas increase. Catalysts decrease reaction rates. Reaction rate constants decrease with increasing temperature. The higher the rate of a reaction the longer it takes to reach completion. O Reaction rates always increase as masses of solid reactants increase. Reaction rates decrease with increasing temperature.