Question 1

Which of the following is the correct formula and charge for the hydrogen carbonate ion, also known as bicarbonate?

Accepted Answer

$\mathrm{HCO_3^-}$

Question 2

A patient is given a medication containing sodium thiosulfate. What is the correct formula for the thiosulfate ion?

Accepted Answer

$\mathrm{S_2O_3^{2-}}$

Question 3

Which of the following ions is correctly paired with its name?

Accepted Answer

$\mathrm{CN^-}$ : Cyanide

Question 4

A water treatment plant uses hypochlorite ions for disinfection. What is the correct formula for the hypochlorite ion?

Accepted Answer

$\mathrm{ClO^-}$

Question 5

Which of the following ions has a $2-$ charge?

Accepted Answer

$\mathrm{CO_3^{2-}}$

Question 6

A laboratory experiment produces a gas with the formula $\mathrm{N_3^-}$. What is the name of this ion?

Accepted Answer

Azide

Question 7

Which of the following correctly matches the ion with its formula and charge?

Accepted Answer

Peroxide: $\mathrm{O_2^{2-}}$

Question 8

Which of the following ions is polyatomic and contains both hydrogen and phosphorus?

Accepted Answer

$\mathrm{H_2PO_4^-}$

Question 9

A solution contains the ion $\mathrm{ClO_4^-}$. What is the correct name for this ion?

Accepted Answer

Perchlorate

Question 10

Which of the following ions is the conjugate base of sulfuric acid ($\mathrm{H_2SO_4}$)?

Accepted Answer

$\mathrm{HSO_4^-}$

Question 11

Which of the following ions is commonly found in household bleach?

Accepted Answer

$\mathrm{ClO^-}$

Question 12

Which of the following is the correct formula for the acetate ion?

Accepted Answer

$\mathrm{C_2H_3O_2^-}$

Question 13

A sample contains the ion $\mathrm{IO_3^-}$. What is the correct name for this ion?

Accepted Answer

Iodate

Question 14

Which of the following ions is a common component of baking soda?

Accepted Answer

$\mathrm{HCO_3^-}$

Question 15

Which of the following ions is the conjugate base of phosphoric acid ($\mathrm{H_3PO_4}$) after losing two protons?

Accepted Answer

$\mathrm{HPO_4^{2-}}$

Question 16

Which of the following ions is present in hydrogen peroxide and is responsible for its oxidizing properties?

Accepted Answer

$\mathrm{O_2^{2-}}$

Question 17

Which of the following is the correct formula for the oxalate ion?

Accepted Answer

$\mathrm{C_2O_4^{2-}}$

Question 18

A solution contains the ion $\mathrm{BrO_3^-}$. What is the correct name for this ion?

Accepted Answer

Bromate

Question 19

Which of the following ions is formed when sulfurous acid ($\mathrm{H_2SO_3}$) loses one proton?

Accepted Answer

$\mathrm{HSO_3^-}$

Question 20

Which of the following ions is correctly matched with its formula and charge?

Accepted Answer

Hydrogen phosphate: $\mathrm{HPO_4^{2-}}$

Common Polyatomic Anions: Names, Formulas, and Charges

Study Guide - Practice Questions