Question

Write balanced chemical equations for each of the following statements.

A) When solid sodium azide (NaN_3) decomposes in a car airbag, it gives off sodium nitride powder (Na_3N), and nitrogen gas, N_2.
B) When oxygen gas reacts with iron metal, it forms iron oxide.
C) When gaseous ethane (C_2H_6), burns in oxygen, it forms carbon dioxide gas and water vapor.

Answer 1

The balanced chemical equations for the decomposition of sodium azide, the reaction of oxygen with iron, and the combustion of ethane are provided, each showcasing the involvement of sodium or nitrogen gas as required.

Step-by-step explanation:

Write balanced chemical equations for each of the following statements.

(A) When solid sodium azide (NaN3) decomposes in a car airbag, it produces sodium metal (Na) and nitrogen gas (N2). The balanced chemical equation is:2 NaN3 (s) → 2 Na (s) + 3 N2 (g)(B) When oxygen gas reacts with iron metal (Fe), it forms iron oxide (Fe3O4 or Fe2O3, depending on the conditions). A general balanced equation for the formation of iron(III) oxide is:4 Fe (s) + 3 O2 (g) → 2 Fe2O3 (s)(C) When gaseous ethane (C2H6), burns in oxygen, it forms carbon dioxide gas and water vapor. The balanced chemical equation is:2 C2H6 (g) + 7 O2 (g) → 4 CO2 (g) + 6 H2O (g)