Question 1

What is the skeletal structure for chloric acid?

Accepted Answer

A)  H-O-Cl-O-O 
B)    
C)  H-O-O-Cl-O 
D)    
E)    
A)  H-O-Cl-O-O 
B)    
C)  H-O-O-Cl-O 
D)    
E)

Question 2

Choose the INCORRECT statement.

Accepted Answer

A) Chlorofluorocarbon production has been banned by many countries. 
B) Chlorine is used to make bleach,PVC,treat water,and make chemicals. 
C) Bromine is used in fire retardants,pesticides,dyes,pharmaceuticals,and film. 
D) Iodine is used in catalysts,medicine and film. 
E) Fluorinated organic compounds are very reactive. 
A) Chlorofluorocarbon production has been banned by many countries. 
B) Chlorine is used to make bleach,PVC,treat water,and make chemicals. 
C) Bromine is used in fire retardants,pesticides,dyes,pharmaceuticals,and film. 
D) Iodine is used in catalysts,medicine and film. 
E) Fluorinated organic compounds are very reactive.

Question 3

What volume of 17 M nitric acid is required to dissolve 15 g of copper by a reaction for which the products are aqueous copper(II)nitrate,nitric oxide gas,and water? Assume 100% reaction.

Accepted Answer

A) 93 mL 
B) 79 mL 
C) 53 mL 
D) 37 mL 
E) 21 mL 
A) 93 mL 
B) 79 mL 
C) 53 mL 
D) 37 mL 
E) 21 mL

Question 4

HI(g)has a ΔGf° that is small and positive,so HI should dissociate to some extent but its activation energy is high.HI(g)is stable at room temperature.Chemists would describe the reason for the very slow dissociation reaction as:

Accepted Answer

A) thermodynamically controlled 
B) the ΔGf° is wrong 
C) the reaction is not slow 
D) the reaction is kinetically controlled 
E) the molecules can collide with each other 
A) thermodynamically controlled 
B) the ΔGf° is wrong 
C) the reaction is not slow 
D) the reaction is kinetically controlled 
E) the molecules can collide with each other

Question 5

Halogen molecules are diatomic.

Accepted Answer

A) True 
 B)False

Question 6

Write a balanced half equation for the following couple: HClO2(aq)| Cl-(aq) (acidic)

Accepted Answer

A) HClO2(aq)+ 2 H2O(l)→ Cl-(aq)+ 3 H+(aq)+ 4 e-  
B) HClO2(aq)+ 2 H+(aq)+ 2 e- → Cl-(aq)+ H2O(l) 
C) HClO2(aq)+ 3 H+(aq)+ 4 e- → Cl-(aq)+ 2 H2O(l) 
D) HClO2(aq)+ 3 H+(aq)→ Cl-(aq)+ H2O(l)+ 4 e-  
E) HClO2(aq)+ e- → Cl-(aq)+ H+(aq)+ O2(g) 
A) HClO2(aq)+ 2 H2O(l)→ Cl-(aq)+ 3 H+(aq)+ 4 e-  
B) HClO2(aq)+ 2 H+(aq)+ 2 e- → Cl-(aq)+ H2O(l) 
C) HClO2(aq)+ 3 H+(aq)+ 4 e- → Cl-(aq)+ 2 H2O(l) 
D) HClO2(aq)+ 3 H+(aq)→ Cl-(aq)+ H2O(l)+ 4 e-  
E) HClO2(aq)+ e- → Cl-(aq)+ H+(aq)+ O2(g)

Question 7

Choose the INCORRECT statement.

Accepted Answer

A) Halogens exist as diatomic molecules. 
B) Group 17 (7
A) are the halogens. 
C) Halogens have relatively low melting and boiling points. 
D) Fluorine is the most reactive halogen. 
E) Fluorine has a low electronegativity and large radius. 
A) Halogens exist as diatomic molecules. 
B) Group 17 (7
A) are the halogens. 
C) Halogens have relatively low melting and boiling points. 
D) Fluorine is the most reactive halogen. 
E) Fluorine has a low electronegativity and large radius.

Question 8

Choose the INCORRECT statement.

Accepted Answer

A) Perbromic acid is HBrO4. 
B) Bromite ion is BrO2-. 
C) Iodate ion is IO3-. 
D) Hypochlorite ion is ClO-. 
E) Hydrochloric acid is HClO2. 
A) Perbromic acid is HBrO4. 
B) Bromite ion is BrO2-. 
C) Iodate ion is IO3-. 
D) Hypochlorite ion is ClO-. 
E) Hydrochloric acid is HClO2.

Question 9

What is the main commercial source of nitrogen?

Accepted Answer

A) fractional distillation of liquid air 
B) chemical reaction from NH3  
C) chemical reaction from HNO3  
D) from lightning or electrical motors 
E) separated from air by chemical traps 
A) fractional distillation of liquid air 
B) chemical reaction from NH3  
C) chemical reaction from HNO3  
D) from lightning or electrical motors 
E) separated from air by chemical traps

Question 10

Arrange the following in order of decreasing acid strength:
HClO2,HClO3,HClO,HClO4

Accepted Answer

A) HClO3 > HClO2 > HClO > HClO4  
B) HClO > HClO2 > HClO3 > HClO4 
C) HClO4 > HClO3 > HClO2 > HClO 
D) HClO2 > HClO > HClO4 > HClO3  
E) HClO3 > HClO > HClO4 > HClO2  
A) HClO3 > HClO2 > HClO > HClO4  
B) HClO > HClO2 > HClO3 > HClO4 
C) HClO4 > HClO3 > HClO2 > HClO 
D) HClO2 > HClO > HClO4 > HClO3  
E) HClO3 > HClO > HClO4 > HClO2

Question 11

Choose the INCORRECT statement.

Accepted Answer

A) Hydroxylammine,NH2OH,is a weak acid. 
B) Laughing gas,an anesthetic used in dentistry,is N2O. 
C) Nitrogen forms oxides with oxidation states that range between +1 and +5. 
D) Azides contain the N3- ion. 
E) An acid anhydride reacts with water to form an acid. 
A) Hydroxylammine,NH2OH,is a weak acid. 
B) Laughing gas,an anesthetic used in dentistry,is N2O. 
C) Nitrogen forms oxides with oxidation states that range between +1 and +5. 
D) Azides contain the N3- ion. 
E) An acid anhydride reacts with water to form an acid.

Question 12

Choose the INCORRECT oxidation state for xenon in the listed molecule.

Accepted Answer

A) XeF2/+2 
B) XeO3/+4 
C) XeF6/+6 
D) XeO4/+8 
E) XeOF2/+4 
A) XeF2/+2 
B) XeO3/+4 
C) XeF6/+6 
D) XeO4/+8 
E) XeOF2/+4

Question 13

On the average,air contains about 9.3 mL of argon per liter.What would be the partial pressure of argon in air when the barometric pressure is 780 Torr?

Accepted Answer

A) 84 Torr 
B) 7.3 Torr 
C) 780 Torr 
D) 770 Torr 
E) 790 Torr 
A) 84 Torr 
B) 7.3 Torr 
C) 780 Torr 
D) 770 Torr 
E) 790 Torr

Question 14

Choose the INCORRECT statement.

Accepted Answer

A) Hydrogen occurs in more compounds than any other element. 
B) The "water gas" reactions produce combustible gases (CO and H2)from steam and C(s). 
C) Metallic hydrides are always in fixed ratios of hydrogen to other elements. 
D) Binary compounds of hydrogen are called hydrides. 
E) Hydrogenation reactions are hydrogen added to double or triple bonds in presence of a catalyst. 
A) Hydrogen occurs in more compounds than any other element. 
B) The "water gas" reactions produce combustible gases (CO and H2)from steam and C(s). 
C) Metallic hydrides are always in fixed ratios of hydrogen to other elements. 
D) Binary compounds of hydrogen are called hydrides. 
E) Hydrogenation reactions are hydrogen added to double or triple bonds in presence of a catalyst.

Question 15

Choose the INCORRECT name/formula combination.

Accepted Answer

A) dinitrogen pentoxide N2O5  
B) nitrogen monoxide NO 
C) nitrogen dioxide N2O2  
D) dinitrogen monoxide N2O 
E) nitric acid HNO3  
A) dinitrogen pentoxide N2O5  
B) nitrogen monoxide NO 
C) nitrogen dioxide N2O2  
D) dinitrogen monoxide N2O 
E) nitric acid HNO3

Question 16

Which of the following is found in Teflon,Freon-12,and in the acid commonly used to etch glass?

Accepted Answer

A) carbon 
B) chlorine 
C) fluorine 
D) hydrogen 
E) oxygen 
A) carbon 
B) chlorine 
C) fluorine 
D) hydrogen 
E) oxygen

Question 17

Choose the INCORRECT statement.

Accepted Answer

A) Hydrazine is N2H2. 
B) Hydroxylamine is NH2OH. 
C) Hydrazine and its derivatives are used as rocket fuels. 
D) HN3 is hydrazoic acid. 
E) Nitrogen is a key element in organic and biochemical molecules. 
A) Hydrazine is N2H2. 
B) Hydroxylamine is NH2OH. 
C) Hydrazine and its derivatives are used as rocket fuels. 
D) HN3 is hydrazoic acid. 
E) Nitrogen is a key element in organic and biochemical molecules.

Question 18

Choose the INCORRECT statement.

Accepted Answer

A) HI is a strong acid 
B) HF is a strong acid 
C) HCl is a strong acid 
D) HBr is a strong acid 
E) HF will etch glass 
A) HI is a strong acid 
B) HF is a strong acid 
C) HCl is a strong acid 
D) HBr is a strong acid 
E) HF will etch glass

Question 19

What is the pH of a solution labeled "0.30 M Hydroxylamine"? [Kb is 9.1 × 10-9]

Accepted Answer

A) 4.38 
B) 6.60 
C) 7.38 
D) 8.23 
E) 9.72 
A) 4.38 
B) 6.60 
C) 7.38 
D) 8.23 
E) 9.72

Question 20

Iodine is only very slightly soluble in water,but it dissolves readily in an aqueous solution of sodium iodide,because molecular iodine acts as:

Accepted Answer

A) a Lewis base to form a coordinate covalent bond with Na+ ion 
B) a reducing agent with water,to form the soluble I+ ion 
C) an oxidizing agent with I- ion to form the soluble I3+ ion 
D) a Lewis acid to form a coordinate covalent bond with I- ion 
E) a catalyst for the disproportionation of water 
A) a Lewis base to form a coordinate covalent bond with Na+ ion 
B) a reducing agent with water,to form the soluble I+ ion 
C) an oxidizing agent with I- ion to form the soluble I3+ ion 
D) a Lewis acid to form a coordinate covalent bond with I- ion 
E) a catalyst for the disproportionation of water

Exam 22: Chemistry of the Main-Group Elements Ii: Groups 18,17,16,15,and Hydrogen

What is the skeletal structure for chloric acid?

Choose the INCORRECT statement.

What volume of 17 M nitric acid is required to dissolve 15 g of copper by a reaction for which the products are aqueous copper(II)nitrate,nitric oxide gas,and water? Assume 100% reaction.

HI(g)has a ΔGf° that is small and positive,so HI should dissociate to some extent but its activation energy is high.HI(g)is stable at room temperature.Chemists would describe the reason for the very slow dissociation reaction as:

Halogen molecules are diatomic.

Write a balanced half equation for the following couple: HClO2(aq)| Cl-(aq) (acidic)

Choose the INCORRECT statement.

Choose the INCORRECT statement.

What is the main commercial source of nitrogen?

Arrange the following in order of decreasing acid strength: HClO2,HClO3,HClO,HClO4

Choose the INCORRECT statement.

Choose the INCORRECT oxidation state for xenon in the listed molecule.

On the average,air contains about 9.3 mL of argon per liter.What would be the partial pressure of argon in air when the barometric pressure is 780 Torr?

Choose the INCORRECT statement.

Choose the INCORRECT name/formula combination.

Which of the following is found in Teflon,Freon-12,and in the acid commonly used to etch glass?

Choose the INCORRECT statement.

Choose the INCORRECT statement.

What is the pH of a solution labeled "0.30 M Hydroxylamine"? [Kb is 9.1 × 10-9]

Iodine is only very slightly soluble in water,but it dissolves readily in an aqueous solution of sodium iodide,because molecular iodine acts as:

Matter: Its Properties and Measurement

Atoms and the Atomic Theory

Chemical Compounds

Chemical Reactions

Introduction to Reactions in Aqueous Solutions

Gases

Thermochemistry

Electrons in Atoms

The Periodic Table and Some Atomic Properties

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Valence Bond and Molecular Orbital Theories

Intermolecular Forces: Liquids and Solids

Spontaneous Change: Entropy and Gibbs Energy

Solutions and Their Physical Properties

Principles of Chemical Equilibrium

Acids and Bases

Additional Aspects of Acidbase Equilibria

Solubility and Complex-Ion Equilibria

Electrochemistry

Chemical Kinetics

Chemistry of the Main-Group Elements I: Groups 1,2,13,and 14

The Transition Elements

Complex Ions and Coordination Compounds

Nuclear Chemistry

Structures of Organic Compounds

Reactions of Organic Compounds

Chemistry of the Living State

Filters

HI(g)has a ΔG_f° that is small and positive,so HI should dissociate to some extent but its activation energy is high.HI(g)is stable at room temperature.Chemists would describe the reason for the very slow dissociation reaction as:

Write a balanced half equation for the following couple: HClO₂(aq)| Cl^-(aq)(acidic)

Arrange the following in order of decreasing acid strength: HClO₂,HClO₃,HClO,HClO₄

What is the pH of a solution labeled "0.30 M Hydroxylamine"? [K_b is 9.1 × 10^-9]