Oxidation Numbers and Bicarbonate Ion

This video tutorial explains how to determine the oxidation numbers for each atom in the bicarbonate ion (HCO3-). It begins with an introduction to the concept of oxidation numbers and the general rules used to find them. The video then demonstrates the calculation of oxidation numbers for oxygen and hydrogen, and how to use these values to determine the oxidation number of carbon in the ion. The tutorial concludes with a recap of the process and the final oxidation numbers for the bicarbonate ion.

What is the primary focus of this video?

• Understanding molecular geometry

• Determining the oxidation numbers in HCO3-

• Learning about acids and bases

• Balancing chemical equations

According to general rules, what is the typical oxidation number for oxygen?

• +1

• -1

• -2

• +2

When hydrogen is bonded to a non-metal, what is its oxidation number?

• -1

• +1

• 0

• +2

What must the sum of oxidation numbers in an ion equal?

• Zero

• The charge of the ion

• The number of atoms

• The atomic mass

How do you calculate the oxidation number of carbon in HCO3-?

• By using the atomic number

• By using the ion's charge and known oxidation numbers

• By counting the number of bonds

• By using the molecular weight

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

• +4

• 0

• -4

• +2

What is the total oxidation number of the oxygens in HCO3-?

• -6

• -2

• -4

• -8

What is the overall charge of the bicarbonate ion?

• -1

• +1

• -2

• 0

What was the final step in determining the oxidation number of carbon?

• Using the periodic table

• Balancing the equation

• Measuring the ion's mass

• Adding up known oxidation numbers and solving for carbon