Ferrous Nitrate and Oxidation States

The video tutorial explains how to write the formula for ferrous nitrate, also known as iron II nitrate. It begins by discussing the older naming system and the significance of the 'ous' suffix, which indicates the lower oxidation state of iron, Fe2+. The video then covers the nitrate ion, NO3-, and its charge. Using the crisscross method, the tutorial demonstrates how to balance the charges to derive the formula Fe(NO3)2. The video concludes by reiterating the formula and thanking viewers.

What does the 'ous' suffix indicate in the naming of ferrous nitrate?

• Lower oxidation state

• Presence of oxygen

• Higher oxidation state

• Neutral charge

What is the oxidation state of iron in ferrous nitrate?

• +4

• +1

• +3

• +2

What is the chemical formula for the nitrate ion?

• NO2-

• NO-

• NO4-

• NO3-

How do you balance the charges when writing the formula for ferrous nitrate?

• By adding water molecules

• By changing the oxidation state of iron

• By using the crisscross method

• By adding more nitrate ions

What is the final chemical formula for ferrous nitrate?

• Fe(NO4)2

• Fe(NO2)2

• Fe(NO3)3

• Fe(NO3)2

What is another name for ferrous nitrate based on its oxidation state?

• Iron(III) nitrate

• Iron(II) nitrate

• Iron(I) nitrate

• Iron(IV) nitrate

Why do we use parentheses around NO3 in the formula for ferrous nitrate?

• To indicate multiple nitrate ions

• To show the charge of nitrate

• To denote a complex ion

• To separate it from iron