Oxidation Numbers and Ionic Charges

The video tutorial explains how to find the oxidation numbers for each element in ammonium hydrogen carbonate (NH4HCO3). It breaks down the compound into ammonium and bicarbonate ions, showing how to calculate the oxidation numbers based on their ionic charges. The ammonium ion has a +1 charge, leading to a nitrogen oxidation number of -3. The bicarbonate ion has a -1 charge, resulting in a carbon oxidation number of +4. The video concludes with a summary of the oxidation numbers for hydrogen and oxygen.

What is the charge of ammonium hydrogen carbonate as a whole?

• 2+

• Neutral

• 1-

• 1+

How is ammonium hydrogen carbonate divided for easier analysis?

• As a single ion

• As two separate ions

• As three separate ions

• As a molecule

What is the ionic charge of the ammonium ion?

• 0

• 2+

• 1-

• 1+

What is the oxidation number of nitrogen in the ammonium ion?

• +1

• 0

• +3

• -3

What is the charge of the bicarbonate ion?

• 0

• 1-

• 1+

• 2-

What is the oxidation number of carbon in the bicarbonate ion?

• -4

• +2

• +4

• 0

What is the typical oxidation number of oxygen in compounds?

• -1

• +2

• 0

• -2

What is the oxidation number of hydrogen when bonded to non-metals?

• +2

• 0

• +1

• -1

Which element in ammonium hydrogen carbonate has an oxidation number of +4?

• Hydrogen

• Oxygen

• Nitrogen

• Carbon

What is the oxidation number of oxygen in ammonium hydrogen carbonate?

• -1

• -2

• 0

• +1