What is the balanced chemical equation for the reaction between hydrochloric acid (HCl) and magnesium (Mg)?

• A. Mg + HCl → MgCl + H₂
• B. Mg + 2 HCl → MgCl₂ + H₂
• C. Mg + HCl → MgHCl + H₂
• D. Mg + 2 HCl → MgH₂ + Cl₂

Answer: (B)