Oxidation Numbers in N2H2

The video tutorial explains how to determine the oxidation number for nitrogen in the N2H2 molecule. It begins by discussing the concept of oxidation numbers in neutral compounds and highlights that hydrogen has an oxidation number of +1 when bonded to a nonmetal. The tutorial then calculates the oxidation number for nitrogen, showing that it is -1. An algebraic method is also demonstrated to verify this calculation. The video concludes with a summary of the oxidation numbers for each element in N2H2.

What is the total oxidation number of a neutral compound like N2H2?

• It depends on the elements present.

• It is always negative.

• It is always positive.

• It is zero.

What is the oxidation number of hydrogen when bonded to a nonmetal?

• -1

• 0

• +1

• +2

How many hydrogen atoms are present in N2H2, and what is their total contribution to the oxidation number?

• Two hydrogen atoms, contributing +2

• One hydrogen atom, contributing +1

• Two hydrogen atoms, contributing -2

• One hydrogen atom, contributing -1

If the total oxidation number of hydrogen in N2H2 is +2, what must be the total oxidation number of nitrogen to balance it?

• 0

• -1

• -2

• +2

In the algebraic method, what variable is used to represent the oxidation number of nitrogen?

• y

• n

• x

• z

What equation is set up to solve for the oxidation number of nitrogen using algebra?

• x + 2 = 0

• 2x + 2 = 0

• x - 2 = 0

• 2x - 2 = 0

What is the oxidation number of nitrogen in N2H2?

• 0

• -2

• +1

• -1

What is the chemical name for N2H2?

• Dinitrogen dihydride

• Nitrogen hydride

• Dihydrogen nitride

• Hydrogen nitride