Question 1

Which of the following is a buffer system?

Accepted Answer

A) NaCl(aq)and NaNO3 (aq) 
B) HCl(aq)and NaOH(aq) 
C)  H2CO3 (aq)and KHCO3 (aq) 
D) NaCl(aq)and NaOH(aq) 
E)  H2O(l)and HCl(aq) 
A) NaCl(aq)and NaNO3 (aq) 
B) HCl(aq)and NaOH(aq) 
C)  H2CO3 (aq)and KHCO3 (aq) 
D) NaCl(aq)and NaOH(aq) 
E)  H2O(l)and HCl(aq)

Question 2

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 3

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 4

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

Accepted Answer

A) True 
 B)False

Question 5

For   ,the product of [     ] and [   ] is ________.

Accepted Answer

A) 1.0 ×   
B) 1.0 ×   
C) 1.0 ×   
D) 1.0 
E) 1.0 ×   
A) 1.0 ×   
B) 1.0 ×   
C) 1.0 ×   
D) 1.0 
E) 1.0 ×

Question 6

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

Accepted Answer

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

Question 7

Match between columns
                        Premises: NaN 11ea71d0_de55_7482_91e5_5d3b97314154_TB6077_11
11ea71d0_de55_7483_91e5_ff3c5005e03b_TB6077_11 11ea71d0_de55_7484_91e5_0301f7b480c4_TB6077_11
11ea71d0_de55_4d6f_91e5_038604a1605a_TB6077_11
HCl
NaCl
11ea71d0_de55_4d70_91e5_2d89b01de245_TB6077_11 11ea71d0_de55_4d71_91e5_2547fe7491ec_TB6077_11
KOH
NaOH

Accepted Answer

The Answer of neither and acid and base is...

Question 8

The [ H3O+ ] 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 9

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

Accepted Answer

A) True 
 B)False

Question 10

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

Accepted Answer

A) True 
 B)False

Question 11

The neutralization reaction between   and   produces the salt with the formula ________.

Accepted Answer

A)  H2O 
B)    
C)    
D)    )3 
E)    OH 
A)  H2O 
B)    
C)    
D)    )3 
E)    OH

Question 12

Ammonium hydroxide is a weak base because ________.

Accepted Answer

A) it forms a dilute solution 
B) it is only slightly soluble in water 
C) is a poor acceptor of protons 
D) it dissociates only slightly in water 
E) it is completely ionized in aqueous solution 
A) it forms a dilute solution 
B) it is only slightly soluble in water 
C) is a poor acceptor of protons 
D) it dissociates only slightly in water 
E) it is completely ionized in aqueous solution

Question 13

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 14

The conjugate base of H2O is ________.

Accepted Answer

A)  H3O+ 
B)  OH- 
C)  H2O 
D)  O2- 
E)  H2O has no conjugate base. 
A)  H3O+ 
B)  OH- 
C)  H2O 
D)  O2- 
E)  H2O has no conjugate base.

Question 15

A solution with a pH greater than 7 is basic.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following is a neutralization reaction?

Accepted Answer

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

Question 17

Strong acids react with Zn metal to produce H2 gas.

Accepted Answer

A) True 
 B)False

Question 18

Which one of the following is characteristic of a base?

Accepted Answer

A) produces H3O+ 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 H3O+ in water 
B) has a sour taste 
C) has a slippery,soapy feel 
D) turns blue litmus red 
E) is insoluble in water

Question 19

The conjugate base of HF is F-.

Accepted Answer

A) True 
 B)False

Question 20

An acidic solution has a pH less than 7.0.

Accepted Answer

A) True 
 B)False

Which of the following is a buffer system?

The function of a buffer is to ________.

In a neutralization reaction ________.

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

For ,the product of [ ] and [ ] is ________.

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

The [ H₃O⁺ ] of a solution with pH = 9.7 is ________.

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

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

The neutralization reaction between and produces the salt with the formula ________.

Ammonium hydroxide is a weak base because ________.

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 conjugate base of H₂O is ________.

A solution with a pH greater than 7 is basic.

Which of the following is a neutralization reaction?

Strong acids react with Zn metal to produce H₂ gas.

Which one of the following is characteristic of a base?

The conjugate base of HF is F^-.

An acidic solution has a pH less than 7.0.

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

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Filters

Exam 10: Acids and Bases and Equilibrium

Which of the following is a buffer system?

The function of a buffer is to ________.

In a neutralization reaction ________.

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

For ,the product of [ ] and [ ] is ________.

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

The [ H3O+ ] of a solution with pH = 9.7 is ________.

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

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

The neutralization reaction between and produces the salt with the formula ________.

Ammonium hydroxide is a weak base because ________.

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 conjugate base of H2O is ________.

A solution with a pH greater than 7 is basic.

Which of the following is a neutralization reaction?

Strong acids react with Zn metal to produce H2 gas.

Which one of the following is characteristic of a base?

The conjugate base of HF is F-.

An acidic solution has a pH less than 7.0.

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

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

The [ H₃O⁺ ] of a solution with pH = 9.7 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 conjugate base of H₂O is ________.

Strong acids react with Zn metal to produce H₂ gas.

The conjugate base of HF is F^-.