High School Chemistry : Help with Polyatomic Ions

Study concepts, example questions & explanations for High School Chemistry

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例子问题ns

例子问题n #1 :Help With Polyatomic Ions

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

Possible Answers:

Correct answer:

Explanation:

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:

例子问题n #2 :Help With Polyatomic Ions

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

Possible Answers:

Correct answer:

Explanation:

andare 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.

例子问题n #3 :Help With Polyatomic Ions

What is the correct molecular formula for phosphoric acid?

Possible Answers:

None of the answer choices are correct

Correct answer:

Explanation:

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

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