Which statement best describes the formula equation Cl_2(g) + 2KBr(aq) \rightarrow 2KCl(aq) + Br_2(l)?

• A. It is a balanced chemical equation representing a single replacement reaction.
• B. It is an unbalanced chemical equation representing a synthesis reaction.
• C. It is a balanced chemical equation representing a decomposition reaction.
• D. It is an unbalanced chemical equation representing a double replacement reaction.

Answer: (A)

Verified step by step guidance

1. Identify the type of reaction by analyzing the reactants and products. In the equation \(Cl_2(g) + 2KBr(aq) \rightarrow 2KCl(aq) + Br_2(l)\), chlorine (\(Cl_2\)) reacts with potassium bromide (\(KBr\)) to form potassium chloride (\(KCl\)) and bromine (\(Br_2\)).
2. Check if the equation is balanced by counting the number of atoms of each element on both sides. On the left, there are 2 chlorine atoms and 2 bromine atoms (from 2 \(KBr\)). On the right, there are 2 chlorine atoms (in \$2KCl\() and 2 bromine atoms (in \)Br_2$).
3. Determine the reaction type: since \(Cl_2\) replaces \(Br\) in \(KBr\) to form \(KCl\) and \(Br_2\), this is a single replacement reaction where one element replaces another in a compound.
4. Confirm that the equation is balanced, meaning the number of atoms for each element is the same on both sides, which satisfies the law of conservation of mass.
5. Conclude that the equation is a balanced chemical equation representing a single replacement reaction.