Balancing Chemical Equations Strategies

The video tutorial explains how to balance a chemical equation involving a combination reaction of NO and O2 forming NO2. It begins by counting the atoms on each side of the equation, then demonstrates how to balance the equation by adjusting coefficients to achieve equal numbers of each type of atom on both sides. The tutorial emphasizes the importance of converting odd numbers of atoms to even numbers to simplify the balancing process. Dr. B concludes with a balanced equation and offers a tip for handling odd numbers of oxygen atoms.

What type of reaction is described in the video involving NO and O2?

• Decomposition reaction

• Single replacement reaction

• Double replacement reaction

• Combination reaction

How many oxygen atoms are present on the reactant side before balancing?

• Three

• Two

• Four

• One

What is the first step suggested to make balancing easier when dealing with odd numbers?

• Add more reactants

• Change the reaction type

• Make the odd number even

• Remove some products

What coefficient is placed in front of NO to help balance the equation?

• 2

• 4

• 3

• 1

After placing a 2 in front of NO, how many oxygen atoms are on the reactant side?

• Four

• Five

• Three

• Two

What coefficient is used in front of NO2 to balance the equation?

• 4

• 1

• 2

• 3

What is the final number of nitrogen atoms on each side of the balanced equation?

• One

• Two

• Three

• Four

What is the key strategy mentioned for balancing equations with odd numbers of oxygen?

• Change the reaction type

• Add more reactants

• Make odd numbers even

• Use a catalyst