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# Metal Heterogeneous Catalyst

APCHEM-J4XU7L

Ethene can be reacted with hydrogen gas to form ethane. The reaction can be facilitated by the use of a metal heterogeneous catalyst.

Which of the following statements is NOT true when hydrogen gas reacts with ethene ($C_2H_4$) by use of a metal catalyst to form ethane ($C_2H_6$)?

A

The hydrogen gas particles are absorbed by the metal surface and split into individual atoms.

B

The individual hydrogen atoms can easily migrate across the surface of the metal surface to bond with the ethene molecules.

C

The ethene molecules are attracted to the metal surface only after sufficient numbers of individual hydrogen atoms have been formed by the metal catalyst.

D

Once the ethane molecules are formed, the adhesion of the new molecule to the metal surface is decreased, releasing the ethane particles.