Gold(III) Nitrate and Oxidation States

The video tutorial explains how to determine the oxidation number of gold in gold(III) nitrate. It begins by identifying the compound as neutral, meaning the oxidation numbers must sum to zero. The tutorial then discusses the oxidation numbers in ions, focusing on the nitrate ion with a -1 charge. By having three nitrate ions, the total negative charge is -3, requiring gold to have a +3 oxidation number to balance it out. The video concludes with a brief mention of additional resources for understanding nitrate ion oxidation numbers.

What is the oxidation number of gold in gold(III) nitrate?

• +2

• +3

• +4

• +1

Why must the oxidation numbers in a neutral compound add up to zero?

• Because it is a rule of thumb

• To ensure the compound is stable

• To make calculations easier

• To balance the charges within the compound

What is the charge of a single nitrate ion?

• -2

• +1

• -1

• 0

How many nitrate ions are present in gold(III) nitrate?

• 3

• 4

• 1

• 2

What is the total negative charge contributed by the nitrate ions in gold(III) nitrate?

• -1

• -2

• -3

• -4

What is the significance of the 'III' in gold(III) nitrate?

• It is a random designation

• It shows the number of nitrate ions

• It represents the oxidation state of gold

• It indicates the number of gold atoms

If you need help with oxidation numbers for nitrate ions, what should you do?

• Ask a friend

• Check the link provided at the end of the video

• Watch the video again

• Refer to a chemistry textbook

What is the overall charge of gold(III) nitrate?

• -1

• +1

• +3

• 0