Cyclohexane is manufactured from the reaction of benzene with hydrogen:
C₆H₆(g) + 3 H₂(g) $\rarr$ C₆H₁₂(g)
If the initial concentration of hydrogen was 1.5 M and 5 minutes later the hydrogen concentration is 0.34 M, what is the average rate of appearance of cyclohexane?

Question

Cyclohexane is manufactured from the reaction of benzene with hydrogen:
C₆H₆(g) + 3 H₂(g)

\rarr

C₆H₁₂(g)
If the initial concentration of hydrogen was 1.5 M and 5 minutes later the hydrogen concentration is 0.34 M, what is the average rate of appearance of cyclohexane?

Quizplus · Accepted Answer

The average rate of appearance of cyclohexane can be calculated based on the change in concentration of hydrogen since 3 moles of hydrogen are consumed for every mole of cyclohexane produced. The change in hydrogen concentration is 1.5 M - 0.34 M = 1.16 M over 5 minutes. Since the stoichiometry requires 3 moles of hydrogen for 1 mole of cyclohexane, the rate of appearance of cyclohexane is (1.16 M / 3) / 5 min = 0.077 M/min or 7.7 x 10^-2 M/min.

Cyclohexane Is Manufactured from the Reaction of Benzene with Hydrogen →\rarr→

Cyclohexane Is Manufactured from the Reaction of Benzene with Hydrogen $\rarr$