Question 1

Which of the following ions has a -2 charge and contains sulfur and oxygen?

Accepted Answer

SO\_$$3^{2-} ($$sulfite)

Question 2

A patient is given a medication containing the ion HCO\_$$3^{-}. $$What is the common name for this ion?

Accepted Answer

Bicarbonate

Question 3

Which of the following polyatomic ions is responsible for the basicity in household bleach?

Accepted Answer

$$ClO^{-} ($$hypochlorite)

Question 4

If a compound contains the ion NO\_$$3^{-}$$, what is its systematic name?

Accepted Answer

Nitrate

Question 5

Which of the following ions would you expect to find in a solution of vinegar?

Accepted Answer

C\_2H\_3O\_$$2^{-} ($$acetate)

Question 6

A fertilizer contains the ion PO\_$$4^{3-}. $$What is the name of this ion?

Accepted Answer

Phosphate

Question 7

Which ion is present in both sodium hypochlorite and potassium hypochlorite?

Accepted Answer

$$ClO^{-} ($$hypochlorite)

Question 8

A water sample is tested and found to contain MnO\_$$4^{-}. $$What is the name of this ion and what color does it impart to the solution?

Accepted Answer

Permanganate; purple

Question 9

Which of the following ions is commonly used in the treatment of cyanide poisoning?

Accepted Answer

S\_2O\_$$3^{2-} ($$thiosulfate)

Question 10

Which ion is present in baking soda?

Accepted Answer

HCO\_$$3^{-} ($$bicarbonate)

Question 11

A compound contains the ion CrO\_$$4^{2-}. $$What is its name and what color is typically associated with it?

Accepted Answer

Chromate; yellow

Question 12

Which of the following ions is a cation?

Accepted Answer

NH\_$$4^{+} ($$ammonium)

Question 13

Which ion is formed when one less oxygen atom is present compared to the 'ate' form?

Accepted Answer

The 'ite' ion (e.g., SO\_$$3^{2-}$$ for sulfite)

Question 14

Which of the following ions is most likely to be found in a solution used for oxidation reactions in organic chemistry?

Accepted Answer

Cr\_2O\_$$7^{2-} ($$dichromate)

Question 15

A sample contains both H\_2PO\_$$4^{-}$$ and HPO\_$$4^{2-}. $$What does this indicate about the sample's pH?

Accepted Answer

It is near neutral, as both ions are present in a buffer system.

Question 16

Which ion is present in hydrogen peroxide?

Accepted Answer

O\_$$2^{2-} ($$peroxide)

Question 17

Which of the following ions is used in the treatment of hypothyroidism?

Accepted Answer

IO\_$$3^{-} ($$iodate)

Question 18

A solution contains both BrO\_$$3^{-}$$ and $$BrO^{-}. $$Which naming convention explains the difference between these ions?

Accepted Answer

'ate' for BrO\_$$3^{-} ($$bromate) and 'hypo' for $$BrO^{-} ($$hypobromite)

Question 19

Which of the following ions is commonly found in rust removers and is a strong oxidizer?

Accepted Answer

MnO\_$$4^{-} ($$permanganate)

Question 20

Which ion is present in the compound used to treat swimming pool water for disinfection?

Accepted Answer

$$ClO^{-} ($$hypochlorite)

Polyatomic Ions and Nomenclature in Introductory Chemistry

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