Aluminum and Oxalate Compounds

The video tutorial explains how to write the formula for aluminum oxalate. It begins by identifying the element symbol for aluminum and the polyatomic ion oxalate, which has a 2- charge. The tutorial then discusses the need to balance the charges to achieve a net zero charge, using the crisscross method to do so. The final formula for aluminum oxalate is verified, ensuring the charges add up to zero. The video concludes with a confirmation of the correct formula.

What is the symbol for aluminum?

• Al

• Am

• Ag

• Au

What type of ion is oxalate?

• Cation

• Anion

• Monatomic ion

• Polyatomic ion

What is the charge on the oxalate ion?

• 1-

• 2-

• 3-

• 4-

Which group does aluminum belong to on the periodic table?

• Group 18

• Group 17

• Group 13

• Group 1

What is the charge of aluminum when forming compounds?

• 1+

• 2+

• 3+

• 4+

What method is used to balance the charges in aluminum oxalate?

• Cross-multiplication

• Addition method

• Crisscross method

• Substitution method

How many aluminum ions are needed to balance the charge with oxalate ions?

• 2

• 1

• 3

• 4

What is the final formula for aluminum oxalate?

• Al(C2O4)2

• Al2(C2O4)3

• Al3(C2O4)2

• AlC2O4