A-LevelChemistryAtoms, molecules and stoichiometry9701/12 · Oct/Nov 2017 · Q31 Mark
The airbags in cars contain sodium azide, NaN3, and an excess of potassium nitrate, KNO3. In a car accident, the reactions shown occur, producing nitrogen. This causes the airbag to inflate rapidly. 2NaN3 → 2Na + 3N2 10Na + 2KNO3 → K2O + 5Na2O + N2 How many moles of nitrogen gas are produced in total when 1 mol of sodium azide, NaN3, decomposes in an airbag?
A1.5
B1.6
C3.2
D4.0
✓ Correct answer
B: 1.6
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