Question

C2H4 is reduced by H2 in the presence of a solid platinum catalyst, as represented by the equation above. Factors that could affect the rate of the reaction include which of the following

I. Changes in the partial pressure of H2
II. Changes in the particles size of the platinum catalyst
III. Changes in the temperature of the reaction system
A. III only
B. I and II
C. I and III
D. II and III
E. I, II and III

Answer 1

The factors that could affect the rate of the reaction are changes in the partial pressure of H2, changes in the particle size of the platinum catalyst, and changes in the temperature of the reaction system.

Step-by-step explanation:

The factors that could affect the rate of the reduction of C2H4 by H2 in the presence of a solid platinum catalyst are:

1. Changes in the partial pressure of H2: Increasing the partial pressure of H2 will increase the rate of the reaction, as it increases the concentration of H2.
2. Changes in the particle size of the platinum catalyst: Reducing the particle size of the platinum catalyst will increase its surface area, leading to more active sites for the reaction to occur, thus increasing the reaction rate.
3. Changes in the temperature of the reaction system: Increasing the temperature will increase the kinetic energy of the molecules, leading to more frequent and energetic collisions, resulting in a higher reaction rate.

Answer 2

E l, ll and lll

Step-by-step explanation: