In a homogeneous system , all the reactants and products are in the — Chemical Equilibrium Chemistry Question

💡 Solution & Explanation

# Homogeneous System Definition In a homogeneous system, all reactants and products exist in the **same phase**. ## Key Reasoning: **What defines "homogeneous"?** - A homogeneous system has uniform composition and properties throughout - There is only **one phase** present (e.g., all gases, all liquids, or all solids) - No visible boundary between different components **Examples:** - Gas phase: $H_2(g) + I_2(g) \rightarrow 2HI(g)$ — all gaseous - Liquid phase: $CH_3COOH(aq) + NaOH(aq) \rightarrow CH_3COONa(aq) + H_2O(l)$ — all in aqueous solution - Solid phase: Alloys or solid solutions **Contrast with heterogeneous:** - Contains multiple phases (e.g., $CaCO_3(s) + 2HCl(aq) \rightarrow CaCl_2(aq) + H_2O(l) + CO_2(g)$) - Has visible boundaries between phases **Answer B** correctly identifies that in a homogeneous system, all reactants and products are in the **same phase**.