Balancing Chemical Equations Practice

This video tutorial demonstrates how to balance the chemical equation for H2S plus NaOH. It begins by counting the atoms on each side of the equation, identifying the need to balance sodium and oxygen first. By adjusting coefficients, the video shows how to achieve balance for sodium and oxygen, and then focuses on balancing hydrogen atoms. The tutorial concludes with a balanced equation, ensuring all atoms are accounted for on both sides.

What is the initial count of hydrogen atoms on the reactant side before balancing?

• 4

• 2

• 3

• 5

How many sodium atoms are present on the product side before balancing?

• 4

• 1

• 2

• 3

What coefficient is added in front of NaOH to balance sodium atoms?

• 1

• 4

• 3

• 2

After balancing sodium, how many oxygen atoms are there on the product side?

• 4

• 3

• 2

• 1

What coefficient is added in front of H2O to balance hydrogen atoms?

• 4

• 1

• 2

• 3

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

• 5

• 2

• 3

• 4

What is the final count of oxygen atoms on both sides after balancing?

• 1

• 4

• 2

• 3

What is the balanced chemical equation for H2S plus NaOH?

• H2S + NaOH → Na2S + H2O

• H2S + 2NaOH → Na2S + 2H2O

• H2S + NaOH → NaHS + H2O

• H2S + 2NaOH → NaHS + 2H2O