$\mathrm{NH_4^+}$ \text{ and } \mathrm{NO_3^-}$

$\mathrm{NH_4^+}$ \text{ and } \mathrm{PO_4^{3-}}$

Question 1

Which of the following is the correct formula for the polyatomic ion sulfate?

Accepted Answer

$\mathrm{SO_4^{2-}}$

Question 2

A solution contains both ammonium and nitrate ions. Which of the following correctly represents the formulas for these ions?

Accepted Answer

$\mathrm{NH_4^+}$ 	ext{ and } \mathrm{NO_3^-}$

Question 3

Which of the following polyatomic ions has a $3-$ charge?

Accepted Answer

$\mathrm{PO_4^{3-}}$

Question 4

A compound contains the ions $\mathrm{Cr_2O_7^{2-}}$ and $\mathrm{K^+}$. What is the name of the polyatomic ion present?

Accepted Answer

Dichromate

Question 5

Which of the following ions is responsible for the blue color in the reaction between copper(II) sulfate and sodium carbonate?

Accepted Answer

$\mathrm{SO_4^{2-}}$

Question 6

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

Accepted Answer

$\mathrm{CH_3COO^-}$

Question 7

A patient is given a medication containing hydrogen carbonate. What is the formula for this ion?

Accepted Answer

$\mathrm{HCO_3^-}$

Question 8

Which of the following ions is commonly found in bleach and is responsible for its disinfecting properties?

Accepted Answer

$\mathrm{ClO^-}$

Question 9

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

Accepted Answer

$\mathrm{HSO_4^-}$

Question 10

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

Accepted Answer

$\mathrm{MnO_4^-}$

Question 11

A fertilizer contains ammonium phosphate. What are the formulas for the ammonium and phosphate ions?

Accepted Answer

$\mathrm{NH_4^+}$ 	ext{ and } \mathrm{PO_4^{3-}}$

Question 12

Which of the following ions is found in both sodium hydrogen sulfate and sodium sulfate?

Accepted Answer

$\mathrm{SO_4^{2-}}$

Question 13

Which of the following ions is used in cyanide extraction of gold from ore?

Accepted Answer

$\mathrm{CN^-}$

Question 14

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

Accepted Answer

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

Question 15

Which of the following ions is present in both baking soda and antacids?

Accepted Answer

$\mathrm{HCO_3^-}$

Question 16

Which of the following ions is a component of DNA and is essential for energy transfer in cells?

Accepted Answer

$\mathrm{PO_4^{3-}}$

Question 17

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

Accepted Answer

$\mathrm{ClO^-}$

Question 18

Which of the following ions is commonly used as an oxidizing agent in organic chemistry reactions?

Accepted Answer

$\mathrm{MnO_4^-}$

Question 19

Which of the following ions is present in the compound potassium dichromate?

Accepted Answer

$\mathrm{Cr_2O_7^{2-}}$

Question 20

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

Accepted Answer

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

Essential Polyatomic Ions for General Chemistry

Study Guide - Practice Questions