Question

Which of the following statements is not true about the reaction as written below?

C₂H₄(g) + H₂(g) —› C₂H₆(g)

A) Hydrogen is a reactant.
B) C₂H₄ is a reactant.
C) The reaction is balanced.
D) The reaction is at equilibrium.

Answer 1

The statement that is not true about the reaction is that the reaction is balanced.

Step-by-step explanation:

The statement that is not true about the reaction is option C) The reaction is balanced. The equation C₂H₄(g) + H₂(g) —› C₂H₆(g) is not balanced because there are 2 atoms of hydrogen on the reactant side and 4 atoms of hydrogen on the product side. To balance the equation, we can add a coefficient of 2 in front of the formula for hydrogen, resulting in 2H₂(g) + C₂H₄(g) —› C₂H₆(g). Now the equation is balanced with equal numbers of atoms on both sides.