Understanding Copper Acetate Properties

The video tutorial explains how to write the formula for copper(II) acetate, a blue crystal compound. It begins by identifying copper as a transition metal with a 2+ charge and explains that acetate is a polyatomic ion not found on the periodic table. The video demonstrates two ways to write the acetate ion formula and emphasizes the need to balance ionic charges by using two acetate ions to match the copper's 2+ charge. The final formula for copper(II) acetate is presented as Cu(C2H3O2)2.

What is the element symbol for copper?

• Ca

• C

• Co

• Cu

What type of ion is acetate?

• Monatomic ion

• Polyatomic ion

• Cation

• Anion

Which of the following is a correct way to write the acetate ion?

• C2H3O2-

• CH3CO2-

• CH3COO-

• C2H4O-

Why do we need two acetate ions to balance the copper ion?

• Because acetate has a 2+ charge

• Because copper has a 1+ charge

• Because copper has a 3+ charge

• Because acetate has a 1- charge

What is the charge of the copper ion in copper(II) acetate?

• 2+

• 2-

• 1-

• 1+

How do you denote multiple acetate ions in the formula?

• By writing a subscript 2 after acetate

• By using parentheses and a subscript 2

• By writing acetate twice

• By using a plus sign

What is the complete formula for copper(II) acetate?

• Cu(C2H3O)2

• CuC2H3O2

• Cu(C2H3O2)2

• Cu2C2H3O2

What is the color of copper(II) acetate crystals?

• Yellow

• Blue

• Green

• Red