Question

• Write a balanced equation using the correct formulas and include conditions (s, l, g, or aq) for each of the following reactions:
  • a. Solid calcium carbonate decomposes to produce solid calcium oxide and carbon dioxide gas.
  • b. Nitrogen oxide gas reacts with carbon monoxide gas to produce nitrogen gas and carbon dioxide gas.
  • c. Iron metal reacts with solid sulfur to produce solid iron( III) sulfide.
  • d. Solid calcium reacts with nitrogen gas to produce solid calcium nitride.
  • e. In the Apollo lunar module, hydrazine gas, N₂H₄, reacts with dinitrogen tetroxide gas to produce gaseous nitrogen and water vapor.

Answer 1

CaCO3 (s) --> CaO (s) + CO2 (g)

2NO (g ) + 2CO (g) --> N2(g) + 2CO2 (g)

2Fe (s) + 3S (s) --> Fe2S3 (s)

6Ca(s) + 2N2(g) --> 2Ca3N2 (s)

2N2H4 (g) + N2O4 (g)--> 3N2 (g) + 4H2O (g)