Answers section

Questions 4.5.4

1. Which gas is produced by nitrates of heavy metals but not nitrates of sodium or potassium?

2. Which gas is produced by the nitrates of both heavy metals and nitrates of sodium and potassium?

3. What is the colour of the solid residues?

4. The residues are sodium nitrite (NaNO2) and potassium nitrite (KNO2). Write chemical equations for thermal decomposition of sodium nitrate and potassium nitrate respectively.

5. Ammonium nitrate decomposes to produce nitrogen (I) oxide (N2O) gas, and steam. Write a chemical equation for the decomposition.

Answers to Questions 4.5.4