Explain why the Haber process is a composition reaction while its reverse reaction is a decomposition reaction. Use worded equations to illustrate your answer.

The Haber process is a method of producing ammonia from nitrogen and hydrogen. The chemical equation for this process is:

N2(g) + 3H2(g) → 2NH3(g)

This is considered a composition reaction because two or more substances (in this case, nitrogen and hydrogen) are combining to form a single product (ammonia).

The reverse reaction of the Haber process is:

2NH3(g) → N2(g) + 3H2(g)

This is considered a decomposition reaction because a single compound (ammonia) is breaking down into two or more simpler substances (nitrogen and hydrogen).

In summary, the direction of the reaction determines whether it is a composition or decomposition reaction. The Haber process is a composition reaction because it involves the combination of substances, while its reverse is a decomposition reaction because it involves the breakdown of a compound.