Copper(II) Phosphate Charge Balancing

The video tutorial explains how to write the formula for copper(II) phosphate. It begins by identifying copper and phosphate ions, highlighting the importance of understanding ionic charges. The crisscross method is introduced to balance these charges, ensuring a net charge of zero. The tutorial concludes by verifying the formula and summarizing the process.

What is the element symbol for copper as found on the periodic table?

• Co

• Ca

• Cu

• C

Phosphate is a polyatomic ion. What is its chemical formula?

• PO3 2-

• PO4 3-

• PO3 3-

• PO4 2-

What does the Roman numeral in Copper(II) Phosphate indicate?

• The atomic mass of copper

• The number of copper atoms

• The charge of copper

• The number of phosphate ions

What is the charge on the phosphate ion?

• 2+

• 3-

• 3+

• 2-

Which method is used to balance the charges in Copper(II) Phosphate?

• Cross-multiplication

• Addition method

• Crisscross method

• Substitution method

How many phosphate ions are needed to balance the charge with three copper ions?

• Three

• Four

• Two

• One

What is the total negative charge contributed by two phosphate ions?

• 3-

• 5-

• 6-

• 4-

How many copper ions are required to balance the charge with two phosphate ions?

• Four

• One

• Three

• Two

What is the net charge of the correctly balanced Copper(II) Phosphate formula?

• 0

• 1+

• 1-

• 2-

What is the final chemical formula for Copper(II) Phosphate?

• Cu2(PO4)3

• Cu3(PO3)2

• Cu3(PO4)2

• Cu(PO4)2