Question 1

In the following reaction,all substances are soluble,and all dissociate except H2O.Identify the spectator ions.HCl + KOH $\rightarrow$ KCl + H2O

Accepted Answer

A) H+ and OH+ 
B) K+ and Cl- 
C) H+ and K+ 
D) Cl- and OH- 
A) H+ and OH+ 
B) K+ and Cl- 
C) H+ and K+ 
D) Cl- and OH-

Question 2

A solution for which [H+] = 1.0 *10-3 will have a pH of _____ .

Accepted Answer

A) "5.00" 
B) "3.00" 
C) "-05.00" 
D) "-9.00" 
A) "5.00" 
B) "3.00" 
C) "-05.00" 
D) "-9.00"

Question 3

Identify two Brønsted base(s)in the reaction. HIO3 (aq)+ H2O (I)   H3O+ (aq)+ 103- (aq)

Accepted Answer

A) HIO3,H2O 
B) HIO3, H3O+ 
C) HIO3,IO3- 
D) H2O,IO3- 
A) HIO3,H2O 
B) HIO3, H3O+ 
C) HIO3,IO3- 
D) H2O,IO3-

Question 4

Many cleaning agents contain bases because bases react with _____ .

Accepted Answer

A) fats or oils 
B) glass 
C) salts 
D) More than one response is correct. 
A) fats or oils 
B) glass 
C) salts 
D) More than one response is correct.

Question 5

The salt of a strong acid and a weak base will give an acidic solution.

Accepted Answer

A) True 
 B)False

Question 6

The cation (positive ion)in a salt comes from _____ .

Accepted Answer

A) an acid 
B) a base 
C) either an acid or a base 
D) water 
A) an acid 
B) a base 
C) either an acid or a base 
D) water

Question 7

NaH2PO4 alone in a water solution could behave as a buffer.

Accepted Answer

A) True 
 B)False

Question 8

A water solution is found to have a molar OH- concentration of 3.2 *10-5.The solution would be classified as _____ .

Accepted Answer

A) acidic 
B) basic 
C) neutral 
D) can't be classified 
A) acidic 
B) basic 
C) neutral 
D) can't be classified

Question 9

The expression for the Ka of the weak acid HF would be which of the following?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 10

Which of the following statements is true for neutral solutions in which water is the solvent?

Accepted Answer

A) Neutral solutions contain no H3O+ ions. 
B) Neutral solutions contain no OH -  ions. 
C) Neutral solutions contain H3O+ and OH - ions in equal concentrations. 
D) More than one response is correct. 
A) Neutral solutions contain no H3O+ ions. 
B) Neutral solutions contain no OH -  ions. 
C) Neutral solutions contain H3O+ and OH - ions in equal concentrations. 
D) More than one response is correct.

Question 11

Identify all Brønsted base(s)in the reaction. N3- (aq)+ H2O (l)   HN3 (aq)+ OH- (aq)

Accepted Answer

A) H2O 
B)    
C) OH- 
D)    and OH- 
A) H2O 
B)    
C) OH- 
D)    and OH-

Question 12

NaCl is an example of a good buffer.

Accepted Answer

A) True 
 B)False

Question 13

The pH of household ammonia is expected to be above 7 because household ammonia is NH4OH.

Accepted Answer

A) True 
 B)False

Question 14

The term,strong acid,refers to

Accepted Answer

A) the number of hydrogens attached to the acid molecule. 
B) the speed at which it will dissolve metal. 
C) if it will cause burns to the skin. 
D) the ability for the acid to completely dissociate in solution. 
A) the number of hydrogens attached to the acid molecule. 
B) the speed at which it will dissolve metal. 
C) if it will cause burns to the skin. 
D) the ability for the acid to completely dissociate in solution.

Question 15

A solution has a pH of 8.72.What is the value of [H+]?

Accepted Answer

A) 5.2 * 10-6 
B) 1.9 *10-9 
C) 5.2 * 10-8 
D) 1.9 *10sup>-5 
A) 5.2 * 10-6 
B) 1.9 *10-9 
C) 5.2 * 10-8 
D) 1.9 *10sup>-5

Question 16

The major difference between the Arrhenius Theory and the Brønsted Theory is that there is no hydrogen in the Brønsted Theory.

Accepted Answer

A) True 
 B)False

Question 17

A reaction in which an acid and a base react completely,leaving only a salt and water,is referred to as a(n)

Accepted Answer

A) hydrolysis reaction. 
B) neutralization reaction. 
C) oxidation reaction. 
D) None of the choices. 
A) hydrolysis reaction. 
B) neutralization reaction. 
C) oxidation reaction. 
D) None of the choices.

Question 18

KOH is a strong base.

Accepted Answer

A) True 
 B)False

Question 19

The molar concentration of H+ ions in a solution is 5.8 *10-9.The pH is _____ .

Accepted Answer

A) 9.00 
B) 5.80 
C) between 8.00 and 9.00 
D) between 9.00 and 10.00 
A) 9.00 
B) 5.80 
C) between 8.00 and 9.00 
D) between 9.00 and 10.00

Question 20

If a solution of acetic acid (a weak acid)is titrated with NaOH solution,what will be the pH at the equivalence point?

Accepted Answer

A) higher than 7 
B) lower than 7 
C) equal to 7 
D) can't predict 
A) higher than 7 
B) lower than 7 
C) equal to 7 
D) can't predict

Exam 9: Acids, bases, and Salts

In the following reaction,all substances are soluble,and all dissociate except H2O.Identify the spectator ions.HCl + KOH →\rightarrow→ KCl + H2O

A solution for which [H+] = 1.0 *10-3 will have a pH of _____ .

Identify two Brønsted base(s)in the reaction. HIO3 (aq)+ H2O (I) H3O+ (aq)+ 103- (aq)

Many cleaning agents contain bases because bases react with _____ .

The salt of a strong acid and a weak base will give an acidic solution.

The cation (positive ion)in a salt comes from _____ .

NaH2PO4 alone in a water solution could behave as a buffer.

A water solution is found to have a molar OH- concentration of 3.2 *10-5.The solution would be classified as _____ .

The expression for the Ka of the weak acid HF would be which of the following?

Which of the following statements is true for neutral solutions in which water is the solvent?

Identify all Brønsted base(s)in the reaction. N3- (aq)+ H2O (l) HN3 (aq)+ OH- (aq)

NaCl is an example of a good buffer.

The pH of household ammonia is expected to be above 7 because household ammonia is NH4OH.

The term,strong acid,refers to

A solution has a pH of 8.72.What is the value of [H+]?

The major difference between the Arrhenius Theory and the Brønsted Theory is that there is no hydrogen in the Brønsted Theory.

A reaction in which an acid and a base react completely,leaving only a salt and water,is referred to as a(n)

KOH is a strong base.

The molar concentration of H+ ions in a solution is 5.8 *10-9.The pH is _____ .

If a solution of acetic acid (a weak acid)is titrated with NaOH solution,what will be the pH at the equivalence point?

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In the following reaction,all substances are soluble,and all dissociate except H₂O.Identify the spectator ions.HCl + KOH $\rightarrow$ KCl + H₂O

A solution for which [H⁺] = 1.0 *10^-³ will have a pH of _____ .

Identify two Brønsted base(s)in the reaction. HIO₃ (aq)+ H₂O (I) H₃O⁺ (aq)+ 10₃^- (aq)

NaH₂PO₄ alone in a water solution could behave as a buffer.

A water solution is found to have a molar OH^- concentration of 3.2 *10^-⁵.The solution would be classified as _____ .

The expression for the K_a of the weak acid HF would be which of the following?

Identify all Brønsted base(s)in the reaction. N₃^- (aq)+ H₂O (l) HN₃ (aq)+ OH^- (aq)

The pH of household ammonia is expected to be above 7 because household ammonia is NH₄OH.

A solution has a pH of 8.72.What is the value of [H⁺]?

The molar concentration of H⁺ ions in a solution is 5.8 *10^-⁹.The pH is _____ .