Help with Polyatomic Ions - High School Chemistry

Card 0 of 3

Question

When the ionic compound is put in water, it dissociates to produce which of the following ions?

Answer

and are known as polyatomic ions. When a compound made up of polyatomic ions ionizes in water, it separates into the original polyatomic ions, not the individual elements.

Compare your answer with the correct one above

Question

Which of the following polyatomic ions has a net charge of ?

Answer

For this question, you need to have the charges of polyatomic ions memorized. This will tell you that of the answer choices only the carbonate ion has a net charge of .

Chlorate:

Nitrite:

Phosphate:

Carbonate:

Compare your answer with the correct one above

Question

What is the correct molecular formula for phosphoric acid?

Answer

Phosphoric acid combines a single phosphate ion with three hydrogen ions. The correct molecular formula is .

Compare your answer with the correct one above

Tap the card to reveal the answer