Oxidation States and Chemical Compounds

The video tutorial explains how to determine the oxidation numbers for each element in the compound P2H4. It starts by identifying the compound as neutral, meaning the sum of oxidation numbers is zero. The oxidation state of hydrogen is determined to be +1 when bonded to a non-metal like phosphorus. An equation is set up to solve for phosphorus's oxidation number, which is found to be -2. The tutorial concludes with a verification of the calculations, ensuring the sum of oxidation numbers equals zero.

What is the overall charge of the compound P2H4?

• Positive

• Negative

• Neutral

• Depends on the environment

When hydrogen is bonded to a non-metal like phosphorus, what is its oxidation state?

• +1

• +2

• -1

• 0

How many hydrogen atoms are present in P2H4?

• 5

• 4

• 2

• 3

What equation is set up to find the oxidation number of phosphorus in P2H4?

• x + 4 = 0

• x - 4 = 0

• 2x + 4 = 0

• 2x - 4 = 0

What is the oxidation number of phosphorus in P2H4?

• +2

• -2

• 0

• +1

Why does the equation 2x + 4 = 0 make sense for P2H4?

• Because 2 and 4 add up to zero

• Because 4 and -4 add up to zero

• Because 4 and 2 add up to zero

• Because 2 and -2 add up to zero