Consider the balanced equation below:2 Fe + 3 Cl_2 → 2 FeCl_3What is the mole ratio of Cl_2 to Fe?

• A. 1:1
• B. 3:2
• C. 2:3
• D. 2:1

Answer: (B)

Verified step by step guidance

1. Identify the coefficients of the substances involved in the balanced chemical equation: \$2 \text{Fe} + 3 \text{Cl}_2 \rightarrow 2 \text{FeCl}_3$.
2. Focus on the substances for which you want to find the mole ratio, in this case, \(\text{Cl}_2\) and \(\text{Fe}\).
3. Write the mole ratio as the ratio of their coefficients from the balanced equation: \(\frac{3 \text{ (for Cl}_2\text{)}}{2 \text{ (for Fe)}}\).
4. Express the ratio in simplest whole number terms, which is \$3:2\( for \)\text{Cl}_2\( to \)\text{Fe}$.
5. Conclude that the mole ratio of \(\text{Cl}_2\) to \(\text{Fe}\) is \$3:2$, meaning 3 moles of chlorine gas react with 2 moles of iron.