Balancing Chemical Equations and Sodium Nitride

The video tutorial explains how to balance the chemical equation for the decomposition of sodium nitride (Na3N) into sodium metal and nitrogen gas. It begins by counting the atoms on both sides of the equation, identifying the imbalance, and then proceeds to balance the equation by adjusting coefficients. The tutorial emphasizes balancing nitrogen first, which affects the sodium count, and concludes with verifying the balanced equation and discussing the states of matter involved.

What is the chemical formula for sodium nitride?

• Na3N

• NaN3

• Na2N

• NaN

How many sodium atoms are present in the reactant side of the equation?

• One

• Two

• Three

• Four

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

• Add a catalyst

• Balance the nitrogen atoms

• Balance the sodium atoms

• Change the temperature

What coefficient is placed in front of sodium nitride to balance the equation?

• 1

• 2

• 3

• 4

What is the final coefficient for sodium metal in the balanced equation?

• 8

• 4

• 2

• 6

What state of matter is sodium nitride in the balanced equation?

• Aqueous

• Liquid

• Gas

• Solid

What is the state of nitrogen gas in the balanced equation?

• Solid

• Aqueous

• Liquid

• Gas