Question 1

The conjugate acid of H₂PO₄- is ________.

Accepted Answer

A)   H₃PO₄
B)   HPO₄2-
C)   PO₄-
D)   H₄PO₄+ A

Question 2

Write down the chemical equation for the reaction of ammonia ( NH₃ ) with water. In aqueous solution, what is the formula for conjugate acid of ammonia?

Accepted Answer

+  O →  +  .  + is the conjugate acid of ammonia in aqueous solution.

Question 3

The pH of natural rainwater is 5.6 due to the carbon dioxide in the atmosphere.

Accepted Answer

A) True 
 B)False  True

Question 4

Which of the following acids is a weak acid?

Accepted Answer

A)   sulfuric acid
B)   hydrochloric acid
C)   nitric acid
D)   carbonic acid

Question 5

A sodium hydroxide solution is a non-electrolyte.

Accepted Answer

A) True 
 B)False

Question 6

Why is HF in water considered a weakly acidic solution, while HCl and HBr in water are considered strongly acidic solutions?

Accepted Answer

A)   HF does not dissolve in water.
B)   HF only partially dissociates into ions in water.
C)   HF has a weak conjugate base,  .
D)   Both B and C are correct.

Question 7

H₂PO₄- is the conjugate acid of PO₄2-.

Accepted Answer

A) True 
 B)False

Question 8

Identify each of the substances as an electrolyte or non-electrolyte.
-gasoline

Accepted Answer

A)  non-electrolyte
B)  electrolyte

Question 9

Approximately one out of every 555 million water molecules autoionize.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following acids does not produce two H₃O+ ion per molecule of acid when dissociated in water?

Accepted Answer

A)   hydriodic acid
B)   sulfurous acid
C)   sulfuric acid
D)   carbonic acid

Question 11

The conjugate acid of HCO₃- is ________.

Accepted Answer

A)   H₂CO₃
B)   CO₃2-
C)   CO₂2-
D)   H₃CO₃-

Question 12

The conjugate base of H₂PO₄- is ________.

Accepted Answer

A)   H₃PO₄
B)   HPO₄2-
C)   PO₄-
D)   H₄PO₄+

Question 13

Which of the following acids is a diprotic acid when dissolved in water?

Accepted Answer

A)   hydrobromic acid
B)   sulfuric acid
C)   hypochlorous acid
D)   phosphoric acid

Question 14

A solution of HCl/ Cl- can act as a buffer.

Accepted Answer

A) True 
 B)False

Question 15

A solution of HF/  can act as a buffer.

Accepted Answer

A) True 
 B)False

Question 16

Match each of the acids with the maximum number of H?O+ produced per molecule of acid.
-carbonic acid

Accepted Answer

A)  3
B)  1
C)  2

Question 17

An aqueous solution of pH 9.5 is more basic than an aqueous solution of pH 8.2.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following acids produces more than one H₃O+ ion per molecule of acid when dissociated in water?

Accepted Answer

A)   hydrobromic acid
B)   carbonic acid
C)   hypochlorous acid
D)   acetic acid

Question 19

An aqueous solution of HCl is called hydrochloric acid.

Accepted Answer

A) True 
 B)False

Question 20

Identify each of the substances as an electrolyte or non-electrolyte.
-solid sodium chloride

Accepted Answer

A)  non-electrolyte
B)  electrolyte

Exam 15: Electrolytes, Acids, and Bases

The conjugate acid of H₂PO₄- is ________.

Write down the chemical equation for the reaction of ammonia ( NH₃ ) with water. In aqueous solution, what is the formula for conjugate acid of ammonia?

The pH of natural rainwater is 5.6 due to the carbon dioxide in the atmosphere.

Which of the following acids is a weak acid?

A sodium hydroxide solution is a non-electrolyte.

Why is HF in water considered a weakly acidic solution, while HCl and HBr in water are considered strongly acidic solutions?

H₂PO₄- is the conjugate acid of PO₄2-.

Identify each of the substances as an electrolyte or non-electrolyte. -gasoline

Approximately one out of every 555 million water molecules autoionize.

Which of the following acids does not produce two H₃O+ ion per molecule of acid when dissociated in water?

The conjugate acid of HCO₃- is ________.

The conjugate base of H₂PO₄- is ________.

Which of the following acids is a diprotic acid when dissolved in water?

A solution of HCl/ Cl^- can act as a buffer.

A solution of HF/ can act as a buffer.

Match each of the acids with the maximum number of H?O+ produced per molecule of acid. -carbonic acid

An aqueous solution of pH 9.5 is more basic than an aqueous solution of pH 8.2.

Which of the following acids produces more than one H₃O+ ion per molecule of acid when dissociated in water?

An aqueous solution of HCl is called hydrochloric acid.

Identify each of the substances as an electrolyte or non-electrolyte. -solid sodium chloride

Exam 15: Electrolytes, Acids, and Bases

The conjugate acid of H₂PO₄- is ________.

Write down the chemical equation for the reaction of ammonia ( NH3 ) with water. In aqueous solution, what is the formula for conjugate acid of ammonia?

The pH of natural rainwater is 5.6 due to the carbon dioxide in the atmosphere.

Which of the following acids is a weak acid?

A sodium hydroxide solution is a non-electrolyte.

Why is HF in water considered a weakly acidic solution, while HCl and HBr in water are considered strongly acidic solutions?

H₂PO₄- is the conjugate acid of PO₄2-.

Identify each of the substances as an electrolyte or non-electrolyte. -gasoline

Approximately one out of every 555 million water molecules autoionize.

Which of the following acids does not produce two H₃O+ ion per molecule of acid when dissociated in water?

The conjugate acid of HCO₃- is ________.

The conjugate base of H₂PO₄- is ________.

Which of the following acids is a diprotic acid when dissolved in water?

A solution of HCl/ Cl- can act as a buffer.

A solution of HF/ can act as a buffer.

Match each of the acids with the maximum number of H?O+ produced per molecule of acid. -carbonic acid

An aqueous solution of pH 9.5 is more basic than an aqueous solution of pH 8.2.

Which of the following acids produces more than one H₃O+ ion per molecule of acid when dissociated in water?

An aqueous solution of HCl is called hydrochloric acid.

Identify each of the substances as an electrolyte or non-electrolyte. -solid sodium chloride

Write down the chemical equation for the reaction of ammonia ( NH₃ ) with water. In aqueous solution, what is the formula for conjugate acid of ammonia?

A solution of HCl/ Cl^- can act as a buffer.