Iron 3 Oxalate and Ionic Compounds

The video tutorial explains how to write the formula for iron(III) oxalate. It begins by identifying iron as a transition metal with a 3+ charge, indicated by the Roman numeral III. The oxalate ion is introduced as a polyatomic ion with a 2- charge. The crisscross method is used to balance the charges, resulting in the formula Fe2(C2O4)3. The video concludes by verifying the formula to ensure the net charge is zero.

What is the element symbol for iron?

• Ir

• In

• I

• Fe

What charge does iron have in iron 3 oxalate?

• 4+

• 1+

• 3+

• 2+

What type of ion is oxalate?

• Anion

• Cation

• Polyatomic

• Monatomic

What is the formula for the oxalate ion?

• SO4 2-

• C2H3O2 -

• C2O4 2-

• CO3 2-

Why is the compound iron 3 oxalate considered ionic?

• It contains only metals

• It contains only non-metals

• It contains both metals and non-metals

• It contains noble gases

What method is used to balance the charges in iron 3 oxalate?

• Substitution method

• Elimination method

• Addition method

• Crisscross method

What is the final formula for iron 3 oxalate?

• Fe(C2O4)2

• Fe2(C2O4)3

• FeC2O4

• Fe3(C2O4)2

What is the net charge of the compound iron 3 oxalate?

• +3

• 0

• -2

• +6

Who is the presenter of the video?

• Dr. C

• Dr. D

• Dr. B

• Dr. A