Oxidation Numbers in H2S

The video tutorial explains how to determine the oxidation number of sulfur in the H2S molecule. It begins by discussing the known oxidation number of hydrogen when bonded to a non-metal like sulfur, which is +1. With two hydrogen atoms, the total is +2. Since H2S is a neutral molecule, the oxidation numbers must sum to zero, requiring sulfur to have an oxidation number of -2. The video also demonstrates setting up an equation to solve for sulfur's oxidation number, confirming it as -2.

What is the oxidation number of hydrogen when it is bonded to a non-metal like sulfur?

• -1

• 0

• +1

• +2

In a neutral molecule like H2S, what should the sum of the oxidation numbers be?

• -2

• +4

• 0

• +2

If the oxidation number of hydrogen is +1, what must be the oxidation number of sulfur in H2S to balance the molecule?

• 0

• +1

• -2

• -1

Which equation represents the balance of oxidation numbers in H2S?

• 2(+1) + x = 0

• 2(-1) + x = 0

• 2(+1) + x = +2

• 2(+1) + x = -2

What is the oxidation number of sulfur in H2S as determined by the algebraic method?

• -2

• +1

• -1

• 0

What is the final oxidation number of sulfur in H2S?

• -2

• -3

• +1

• +2