Question 1

Which of the following is a buffer system?

Accepted Answer

A) NaCl(aq)and   (aq) 
B) HCl(aq)and NaOH(aq) 
C)      (aq)and   (aq) 
D) NaCl(aq)and NaOH(aq) 
E)    O(l)and HCl(aq) 
A) NaCl(aq)and   (aq) 
B) HCl(aq)and NaOH(aq) 
C)      (aq)and   (aq) 
D) NaCl(aq)and NaOH(aq) 
E)    O(l)and HCl(aq)

Question 2

A buffer is a solution that tends to maintain a neutral pH.

Accepted Answer

A) True 
 B)False

Question 3

When an acid reacts with a metal like Al,the products are ________.

Accepted Answer

A) water and a base 
B) water and a salt 
C) water and carbon dioxide 
D) a salt and carbon dioxide 
E) a salt and hydrogen 
A) water and a base 
B) water and a salt 
C) water and carbon dioxide 
D) a salt and carbon dioxide 
E) a salt and hydrogen

Question 4

Which of the following is correctly identified?

Accepted Answer

A)    ,strong acid 
B) NaOH,strong base 
C) HCl,weak acid 
D)      ,strong acid 
E) Ca   ,weak base 
A)    ,strong acid 
B) NaOH,strong base 
C) HCl,weak acid 
D)      ,strong acid 
E) Ca   ,weak base

Question 5

What is the pH of a solution with [   ] = 1 ×   M?

Accepted Answer

A) 10.0 
B) -10.0 
C) 4.0 
D) -4.0 
E) 1.0 ×   
A) 10.0 
B) -10.0 
C) 4.0 
D) -4.0 
E) 1.0 ×

Question 6

A system is at equilibrium when the rate of the forward and reverse reactions are equal.

Accepted Answer

A) True 
 B)False

Question 7

In a neutralization reaction ________.

Accepted Answer

A) two acids react to form water 
B) water and a salt react to form an acid and a base 
C) an acid and a salt react to form water and a base 
D) a base and a salt react to form water and an acid 
E) an acid and a base react to form a salt and water 
A) two acids react to form water 
B) water and a salt react to form an acid and a base 
C) an acid and a salt react to form water and a base 
D) a base and a salt react to form water and an acid 
E) an acid and a base react to form a salt and water

Question 8

HF is a strong acid.

Accepted Answer

A) True 
 B)False

Question 9

If a solution has   = 1.0 ×   M,the   is also 1.0 ×   M.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following is the correctly balanced equation for the complete neutralization of     by   ?

Accepted Answer

A)      (aq)+ Ca   (s)→ CaH   (aq)+ 2   O(l) 
B) 3     (aq)+ Ca   (s)→       (aq)+ 5   O(l) 
C)      (aq)+ Ca   (s)→       (aq)+   O(l) 
D) 2     (aq)+ 3Ca   (s)→       (aq)+ 6   O(l) 
E) 4     (aq)+ 6Ca   (s)→ 2       (aq)+ 12   O(l) 
A)      (aq)+ Ca   (s)→ CaH   (aq)+ 2   O(l) 
B) 3     (aq)+ Ca   (s)→       (aq)+ 5   O(l) 
C)      (aq)+ Ca   (s)→       (aq)+   O(l) 
D) 2     (aq)+ 3Ca   (s)→       (aq)+ 6   O(l) 
E) 4     (aq)+ 6Ca   (s)→ 2       (aq)+ 12   O(l)

Question 11

HF is a strong acid.

Accepted Answer

A) True 
 B)False

Question 12

Which one of the following is characteristic of a base?

Accepted Answer

A) produces     in water 
B) has a sour taste 
C) has a slippery,soapy feel 
D) turns blue litmus red 
E) is insoluble in water 
A) produces     in water 
B) has a sour taste 
C) has a slippery,soapy feel 
D) turns blue litmus red 
E) is insoluble in water

Question 13

The conjugate base of   O is     .

Accepted Answer

A) True 
 B)False

Question 14

An acid and base react to form a salt and water in a(n)________ reaction.

Accepted Answer

A) ionization 
B) dissociation 
C) oxidation 
D) neutralization 
E) reduction 
A) ionization 
B) dissociation 
C) oxidation 
D) neutralization 
E) reduction

Question 15

When more reactant is added to a system iat equilibrium,the reverse reaction is favored.

Accepted Answer

A) True 
 B)False

Question 16

Identify the Brønsted-Lowry acid in the following reaction.   O(l)+   (aq)→   (aq)+   (aq)

Accepted Answer

A)    O 
B)    
C)    
D) OH- 
E) H2CO3 
A)    O 
B)    
C)    
D) OH- 
E) H2CO3

Question 17

An aqueous solution with   = 1.0 ×   has a pH of 12.0.

Accepted Answer

A) True 
 B)False

Question 18

What is the [     ] in a solution with [   ] = 1 ×   M?

Accepted Answer

A) 1 ×   M 
B) 1 ×   M 
C) 1 ×   M 
D) 1 ×   M 
E) 1 ×   M 
A) 1 ×   M 
B) 1 ×   M 
C) 1 ×   M 
D) 1 ×   M 
E) 1 ×   M

Question 19

For many reactions of acids with bases,the resulting products are a salt and water.

Accepted Answer

A) True 
 B)False

Question 20

According to LeChâtelier's principle,predict whether adding     causes the system to shift in the direction of reactants,products,or no change. N   (aq)+   O(l)⇌ N   (aq)+     (aq)

Accepted Answer

A) reactants 
B) products 
C) no change 
A) reactants 
B) products 
C) no change

Which of the following is a buffer system?

A buffer is a solution that tends to maintain a neutral pH.

When an acid reacts with a metal like Al,the products are ________.

Which of the following is correctly identified?

What is the pH of a solution with [ ] = 1 × M?

A system is at equilibrium when the rate of the forward and reverse reactions are equal.

In a neutralization reaction ________.

HF is a strong acid.

If a solution has = 1.0 × M,the is also 1.0 × M.

Which of the following is the correctly balanced equation for the complete neutralization of by ?

HF is a strong acid.

Which one of the following is characteristic of a base?

The conjugate base of O is .

An acid and base react to form a salt and water in a(n)________ reaction.

When more reactant is added to a system iat equilibrium,the reverse reaction is favored.

Identify the Brønsted-Lowry acid in the following reaction. O(l)+ (aq)→ (aq)+ (aq)

An aqueous solution with = 1.0 × has a pH of 12.0.

What is the [ ] in a solution with [ ] = 1 × M?

For many reactions of acids with bases,the resulting products are a salt and water.

According to LeChâtelier's principle,predict whether adding causes the system to shift in the direction of reactants,products,or no change. N (aq)+ O(l)⇌ N (aq)+ (aq)

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Exam 10: Acids and Bases and Equilibrium

Which of the following is a buffer system?

A buffer is a solution that tends to maintain a neutral pH.

When an acid reacts with a metal like Al,the products are ________.

Which of the following is correctly identified?

What is the pH of a solution with [ ] = 1 × M?

A system is at equilibrium when the rate of the forward and reverse reactions are equal.

In a neutralization reaction ________.

HF is a strong acid.

If a solution has = 1.0 × M,the is also 1.0 × M.

Which of the following is the correctly balanced equation for the complete neutralization of by ?

HF is a strong acid.

Which one of the following is characteristic of a base?

The conjugate base of O is .

An acid and base react to form a salt and water in a(n)________ reaction.

When more reactant is added to a system iat equilibrium,the reverse reaction is favored.

Identify the Brønsted-Lowry acid in the following reaction. O(l)+ (aq)→ (aq)+ (aq)

An aqueous solution with = 1.0 × has a pH of 12.0.

What is the [ ] in a solution with [ ] = 1 × M?

For many reactions of acids with bases,the resulting products are a salt and water.

According to LeChâtelier's principle,predict whether adding causes the system to shift in the direction of reactants,products,or no change. N (aq)+ O(l)⇌ N (aq)+ (aq)

Chemistry in Our Lives

Chemistry and Measurement

Matter and Energy

Atoms and Elements

Nuclear Chemistry

Ionic and Molecular Compounds

Chemical Quantities and Reactions

Gases

Solutions

Introduction to Organic Chemistry: Hydrocarbons

Alcohols, thiols, ethers, aldehydes, and Ketones

Carbohydrates

Carboxylic Acids, esters, amines, and Amides

Lipids

Amino Acids, proteins, and Enzymes

Nucleic Acids and Protein Synthesis

Metabolic Pathways and Energy Production

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