Final answer:
In the chemical reaction 2 Na (s) + Cl₂(g) → 2 NaCl (s), sodium metal combines with chlorine gas to form solid sodium chloride, in accordance with the law of conservation of mass.
Step-by-step explanation:
The reaction 2 Na (s) + Cl₂(g) → 2 NaCl (s) represents a synthesis or combination reaction, where solid sodium metal reacts with chlorine gas to produce solid sodium chloride. This balanced equation indicates that:
- The reaction involves the formation of sodium chloride.
- The reaction involves the combination of sodium and chlorine.
- The reaction produces sodium chloride in solid state.
It does not produce sodium chloride in a gaseous state. The equation is balanced, adhering to the law of conservation of mass, with the stoichiometric coefficients indicating the molar ratio of the reactants to the products.