Question 1

Which of the following could be a buffer?

Accepted Answer

A) NaF(aq) 
B) HF(aq)+ NaF(aq) 
C) HF(aq)+   O(l) 
D) NaF(aq)+   O(l) 
E) NaCl(aq)+ HF(aq) 
A) NaF(aq) 
B) HF(aq)+ NaF(aq) 
C) HF(aq)+   O(l) 
D) NaF(aq)+   O(l) 
E) NaCl(aq)+ HF(aq)

Question 2

An acidic solution has a pH less than 7.0.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following is the strongest acid?

Accepted Answer

A)      
B)    
C) NaOH 
D)      
E) HCl 
A)      
B)    
C) NaOH 
D)      
E) HCl

Question 4

When a system is at equilibrium,all the concentrations are 1 M.

Accepted Answer

A) True 
 B)False

Question 5

The function of a buffer is to ________.

Accepted Answer

A) change color at the end point of a titration 
B) maintain the pH of a solution 
C) be a strong base 
D) maintain a neutral pH 
E) act as a strong acid 
A) change color at the end point of a titration 
B) maintain the pH of a solution 
C) be a strong base 
D) maintain a neutral pH 
E) act as a strong acid

Question 6

Which one of the following is characteristic of an acid?

Accepted Answer

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

Question 7

According to the Arrhenius concept,if   were dissolved in water,it would act as ________.

Accepted Answer

A) a base 
B) an acid 
C) a source of hydroxide ions 
D) a source of H- ions 
E) a proton acceptor 
A) a base 
B) an acid 
C) a source of hydroxide ions 
D) a source of H- ions 
E) a proton acceptor

Question 8

The conjugate base of HF is F-.

Accepted Answer

A) True 
 B)False

Question 9

In any aqueous solution,     = 1.0 ×   .

Accepted Answer

A) True 
 B)False

Question 10

Which of the following is a neutralization reaction?

Accepted Answer

A) KCl (aq)+   (aq)→   (aq)+ NaCl(aq) 
B)    (aq)+ KOH(aq)→   O (l)+   (aq) 
C)    O(l)+   (g)→     (aq) 
D) 4Na(s)+   (g)→ 2   O(s) 
E) 2   (g)→ 2NO(g)+   (g) 
A) KCl (aq)+   (aq)→   (aq)+ NaCl(aq) 
B)    (aq)+ KOH(aq)→   O (l)+   (aq) 
C)    O(l)+   (g)→     (aq) 
D) 4Na(s)+   (g)→ 2   O(s) 
E) 2   (g)→ 2NO(g)+   (g)

Question 11

The [     ] of a solution with pH = 2.0 is ________.

Accepted Answer

A) 10 M 
B) -10 M 
C) 1 ×   M 
D) 1 ×   M 
E) 1 ×   M 
A) 10 M 
B) -10 M 
C) 1 ×   M 
D) 1 ×   M 
E) 1 ×   M

Question 12

According to LeChâtelier's principle,predict whether adding H2O 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

Question 13

The [     ] of a solution with pH = 9.7 is ________.

Accepted Answer

A) 9.7 M 
B) 1 ×   M 
C) 2 ×   M 
D) 5 ×   M 
E) 9.7 ×   M 
A) 9.7 M 
B) 1 ×   M 
C) 2 ×   M 
D) 5 ×   M 
E) 9.7 ×   M

Question 14

Acids turn litmus blue.

Accepted Answer

A) True 
 B)False

Question 15

What is the [     ] in a solution with [   ] = 2.5 ×   M?

Accepted Answer

A) 2.5 ×   M 
B) 4.0 ×   M 
C) 4.0 ×   M 
D) 4.0 ×   M 
E) 1.0 ×   M 
A) 2.5 ×   M 
B) 4.0 ×   M 
C) 4.0 ×   M 
D) 4.0 ×   M 
E) 1.0 ×   M

Question 16

What is the [   ] in a solution that has a [     ] = 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 17

Normal blood pH is about ________.

Accepted Answer

A) 6.8 
B) 7.0 
C) 7.2 
D) 7.4 
E) 7.6 
A) 6.8 
B) 7.0 
C) 7.2 
D) 7.4 
E) 7.6

Question 18

When a reaction is at equilibrium,________.

Accepted Answer

A) all reaction stops 
B) no more reactants are converted to products 
C) the reaction is no longer reversible 
D) the forward and reverse reactions occur at the same rate 
E) the products and reactants have the same energy content 
A) all reaction stops 
B) no more reactants are converted to products 
C) the reaction is no longer reversible 
D) the forward and reverse reactions occur at the same rate 
E) the products and reactants have the same energy content

Question 19

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

Accepted Answer

A) 1.0 ×   
B) -9.0 
C) 5.0 
D) -5.0 
E) 9.0 
A) 1.0 ×   
B) -9.0 
C) 5.0 
D) -5.0 
E) 9.0

Question 20

The name of   is ________.

Accepted Answer

A) aluminum trihydroxide 
B) monoaluminum trihydroxide 
C) aluminum hydroxide 
D) aluminum(III)hydroxide 
E) aluminum oxygen hydride 
A) aluminum trihydroxide 
B) monoaluminum trihydroxide 
C) aluminum hydroxide 
D) aluminum(III)hydroxide 
E) aluminum oxygen hydride

Which of the following could be a buffer?

An acidic solution has a pH less than 7.0.

Which of the following is the strongest acid?

When a system is at equilibrium,all the concentrations are 1 M.

The function of a buffer is to ________.

Which one of the following is characteristic of an acid?

According to the Arrhenius concept,if were dissolved in water,it would act as ________.

The conjugate base of HF is F-.

In any aqueous solution, = 1.0 × .

Which of the following is a neutralization reaction?

The [ ] of a solution with pH = 2.0 is ________.

According to LeChâtelier's principle,predict whether adding H2O causes the system to shift in the direction of reactants,products,or no change. N (aq)+ O(l)⇌ N (aq)+ (aq)

The [ ] of a solution with pH = 9.7 is ________.

Acids turn litmus blue.

What is the [ ] in a solution with [ ] = 2.5 × M?

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

Normal blood pH is about ________.

When a reaction is at equilibrium,________.

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

The name of is ________.

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Gases

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Alcohols, thiols, ethers, aldehydes, and Ketones

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Exam 10: Acids and Bases and Equilibrium

Which of the following could be a buffer?

An acidic solution has a pH less than 7.0.

Which of the following is the strongest acid?

When a system is at equilibrium,all the concentrations are 1 M.

The function of a buffer is to ________.

Which one of the following is characteristic of an acid?

According to the Arrhenius concept,if were dissolved in water,it would act as ________.

The conjugate base of HF is F-.

In any aqueous solution, = 1.0 × .

Which of the following is a neutralization reaction?

The [ ] of a solution with pH = 2.0 is ________.

According to LeChâtelier's principle,predict whether adding H2O causes the system to shift in the direction of reactants,products,or no change. N (aq)+ O(l)⇌ N (aq)+ (aq)

The [ ] of a solution with pH = 9.7 is ________.

Acids turn litmus blue.

What is the [ ] in a solution with [ ] = 2.5 × M?

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

Normal blood pH is about ________.

When a reaction is at equilibrium,________.

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

The name of is ________.

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

Filters