Question

C2H4(g) + H2(g) mc030-1.jpg C2H6(g) Which change would likely cause the greatest increase in the rate of the reaction?

Answer 1

Answer;

increasing temperature and pressure

Explanation;

• The reaction involves gases;

C2H4(g) + H2(g) → C2H6(g)

• Therefore, a change in pressure and temperature greatly affects the rate of reaction or the rate at which the products are formed.
• Increasing the pressure in the reaction favors the rate of reaction as the 2 volumes of the reactants forms 1 volume of the product and thus compression is evident, which will increase the rate of reaction.
• Increasing the temperature also increases the rate of reaction due to increases in the kinetic energy of molecules of the reactants and thus an increase in the number of collision by the particles of the reactants and thus the speed at which the products are formed.

Answer 2

The reaction is a hydrogenation reaction of an alkene, and its equation is:
C₂H₄(g) + H₂(g) → C₂H₆(g)
Therefore, this reaction can be sped up just as any other irreversible reaction may have its rate increased, by increasing temperature and pressure to increase the effective collisions of molecules.