Balancing Chemical Equations

In this video, Dr. B demonstrates how to balance the chemical equation NO + Br2 = NOBr. The process begins by counting the atoms on both sides of the equation. Initially, the bromine atoms are unbalanced, so a coefficient of 2 is added in front of NOBr. This adjustment affects all elements in NOBr, requiring further balancing of nitrogen and oxygen atoms. By placing a coefficient of 2 in front of NO, the equation is balanced with equal numbers of nitrogen, oxygen, and bromine atoms on both sides. The video concludes with a review of the balanced equation.

What is the initial count of bromine atoms on the reactant side in the equation NO + Br2 = NOBr?

• 4

• 3

• 2

• 1

Which coefficient is added in front of NOBr to balance the bromine atoms?

• 4

• 1

• 2

• 3

After balancing bromine, what is the new count of nitrogen atoms on the product side?

• 3

• 4

• 1

• 2

What coefficient is placed in front of NO to balance the nitrogen atoms?

• 3

• 2

• 1

• 4

How many oxygen atoms are there on the product side after balancing?

• 4

• 3

• 2

• 1

What is the final balanced equation for NO + Br2 = NOBr?

• NO + 2Br2 = NOBr

• 2NO + Br2 = 2NOBr

• NO + Br2 = NOBr

• 2NO + 2Br2 = 2NOBr