Balancing Chemical Equations and Reactions

The video tutorial explains the decomposition of sodium nitride (Na3N) into sodium (Na) and nitrogen gas (N2), a reaction used in car airbags. It demonstrates how to balance the chemical equation by adjusting coefficients to ensure equal numbers of each atom on both sides. The process involves making nitrogen atoms even and adjusting sodium accordingly, resulting in a balanced equation. Dr. B concludes with the significance of this reaction in airbags.

What is the primary chemical reaction involved in airbag deployment?

• Reduction of copper

• Oxidation of iron

• Combustion of gasoline

• Decomposition of sodium nitride

Why is it important to balance a chemical equation?

• To ensure the reaction is safe

• To comply with the law of conservation of mass

• To make the reaction faster

• To increase the yield of products

What is the first step in balancing the given chemical equation?

• Remove excess products

• Adjust the coefficients to make the number of atoms even

• Add more reactants

• Change the products

How do you achieve an even number of nitrogen atoms in the equation?

• Remove sodium

• Add more nitrogen gas

• Multiply the nitrogen by two

• Add more sodium

What coefficient is used for sodium to balance the equation?

• 4

• 3

• 2

• 1

What is the final balanced equation for the decomposition of sodium nitride?

• Na3N -> Na + 3N2

• 2Na3N -> 6Na + 3N2

• 2Na3N -> 6Na + N2

• Na3N -> 3Na + N2

What gas is produced to fill the airbag during the reaction?

• Oxygen

• Hydrogen

• Nitrogen

• Carbon Dioxide