Question

types of chemical reactions quiz
chemistry b beach el(a - f) semester 2 3761 / module 7: chemical reactions

1. which of the following types of reactions is shown here? 2 h₂ + s₂ → 2 h₂s

options: decomposition, synthesis, double replacement, single replacement

Explanation:

To determine the type of chemical reaction, we analyze the given reaction: \( 2H_2 + S_2
ightarrow 2H_2S \). A synthesis reaction is defined as a reaction where two or more reactants combine to form a single product. Here, hydrogen (\(H_2\)) and sulfur (\(S_2\)) combine to form hydrogen sulfide (\(H_2S\)), which fits the definition of a synthesis reaction. Decomposition is the opposite (one reactant breaking into multiple products), single replacement involves one element replacing another in a compound, and double replacement involves the exchange of ions between two compounds. Since this reaction is combining two substances into one, it is a synthesis reaction.

Answer:

synthesis