What types of reaction occur in the Haber process during the production of ammonia? (A) Redox and synthesis (B) Hydration and redox (C) Decomposition and oxidation (D) Reduction and decomposition - HSC - SSCE Chemistry - Question 9 - 2010 - Paper 1

The Haber process for the production of ammonia involves a synthesis reaction from nitrogen and hydrogen gases. This reaction can be represented as follows:

$N_2(g) + 3H_2(g) \rightleftharpoons 2NH_3(g)$

In this process, nitrogen and hydrogen undergo a combination (synthesis) to form ammonia (NH₃). Additionally, since the reaction involves the transfer of electrons, which leads to changes in the oxidation states of the reactants and products, it can also be classified as a redox reaction.

Thus, the types of reactions that occur in the Haber process are both redox and synthesis, making the correct answer (A) Redox and synthesis.