Question 1

The stable forms of chlorine,bromine,and iodine at 25S1U1P1$\circ$S1S1P0C and 1 atm are

Accepted Answer

A) Cl2(g),Br2(g),and I2(g). 
B) Cl2(g),Br2(l),and I2(s). 
C) Cl2(g),Br2(l),and I2(l). 
D) Cl2(g),Br(l),and I(s). 
E) Cl2(g),Br(l),and I2(g). 
A) Cl2(g),Br2(g),and I2(g). 
B) Cl2(g),Br2(l),and I2(s). 
C) Cl2(g),Br2(l),and I2(l). 
D) Cl2(g),Br(l),and I(s). 
E) Cl2(g),Br(l),and I2(g). B

Question 2

All the following acids have pKas smaller than 2.0 except

Accepted Answer

A) HIO. 
B) HBrO3.  
C) HClO3.  
D) HIO4.  
E) HClO4.  
A) HIO. 
B) HBrO3.  
C) HClO3.  
D) HIO4.  
E) HClO4.  A

Question 3

State whether each of the following oxides is acidic,basic,or amphoteric.
P2O5
NO2
Sb2O3
As4O6
Bi2O3

Accepted Answer

P₂O₅,acidic; NO₂,acidic; Sb₂O₃,amphoteric; As₄O₆,amphoteric; Bi₂O₃ ,basic

Question 4

Which of the following molecules requires the most energy to split into gaseous atoms?

Accepted Answer

A) CO 
B) F2  
C) O2  
D) N2  
E) Cl2  
A) CO 
B) F2  
C) O2  
D) N2  
E) Cl2

Question 5

The nitrate ion can act as a reducing agent only in redox reactions.

Accepted Answer

A) True 
 B)False

Question 6

The sublimation of "dry ice" is spontaneous at 25S1U1P1$\circ$S1S1P0C and 1 atm.What are the signs of $\Delta$HS1U1P1$\circ$S1S1P0and $\Delta$SS1U1P1$\circ$S1S1P0,respectively?

Accepted Answer

A) 0,+ 
B) +,- 
C) -,+ 
D) +,+ 
E) -,- 
A) 0,+ 
B) +,- 
C) -,+ 
D) +,+ 
E) -,-

Question 7

Write an equation for the first ionization energy of sodium.

Accepted Answer

Na(g)@#LAT-DLM& Na<s

Question 8

Silane is produced in the following reactions.
a.SiCl4 + LiAlH4 $\rightarrow$SiH4 + LiAlCl4
b.Mg2Si + 4HCl $\rightarrow$ SiH4 + 2MgCl2
Classify each reaction as a redox or displacement reaction.

Accepted Answer

(a)displac

Question 9

Which of the following is unstable?

Accepted Answer

A) HFO 
B) HBrO 
C) HClO 
D) HI 
E) HF 
A) HFO 
B) HBrO 
C) HClO 
D) HI 
E) HF

Question 10

When hydrogen peroxide disproportionates it forms water and oxygen gas.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following is the weakest acid?

Accepted Answer

A) HClO4  
B) HIO 
C) HBrO4  
D) HClO 
E) HBrO3  
A) HClO4  
B) HIO 
C) HBrO4  
D) HClO 
E) HBrO3

Question 12

The geometry of PCl4+ is

Accepted Answer

A) T-shaped. 
B) tetrahedral. 
C) seesaw. 
D) trigonal bipyramidal. 
E) trigonal pyramidal. 
A) T-shaped. 
B) tetrahedral. 
C) seesaw. 
D) trigonal bipyramidal. 
E) trigonal pyramidal.

Question 13

Which of the following reacts only as a reducing agent?

Accepted Answer

A) P4  
B) NO2- 
C) F2  
D) NH3 
E) S8  
A) P4  
B) NO2- 
C) F2  
D) NH3 
E) S8

Question 14

Dinitrogen trioxide can be prepared by

Accepted Answer

A) reacting hydrazine with water. 
B) reacting ammonia with water. 
C) dehydrating nitrous acid. 
D) dehydrating nitric acid. 
E) reacting N2O with O2. 
A) reacting hydrazine with water. 
B) reacting ammonia with water. 
C) dehydrating nitrous acid. 
D) dehydrating nitric acid. 
E) reacting N2O with O2.

Question 15

All of the following react with water to form hydrogen and a hydroxide except

Accepted Answer

A) Mg. 
B) Na. 
C) Ca. 
D) K. 
E) Be. 
A) Mg. 
B) Na. 
C) Ca. 
D) K. 
E) Be.

Question 16

Which of the following are all allotropes?

Accepted Answer

A) Graphite,diamond,and C60  
B) Silicon,carbon,and C60  
C) Boron carbide and carbon 
D) Carbon monoxide and carbon dioxide 
E) Silicon carbide,diamond,and C60  
A) Graphite,diamond,and C60  
B) Silicon,carbon,and C60  
C) Boron carbide and carbon 
D) Carbon monoxide and carbon dioxide 
E) Silicon carbide,diamond,and C60

Question 17

All of the following elements form hydrides except

Accepted Answer

A) K 
B) Be 
C) Ca 
D) Rb 
A) K 
B) Be 
C) Ca 
D) Rb

Question 18

The products of the disproportionation of chlorine in water are

Accepted Answer

A) HClO and O2 
B) HClO and HCl 
C) ClO2 and H2 
D) OH- and HCl 
A) HClO and O2 
B) HClO and HCl 
C) ClO2 and H2 
D) OH- and HCl

Question 19

The compound BeI2 is an ionic compound.

Accepted Answer

A) True 
 B)False

Question 20

What is the formula of baking soda?

Accepted Answer

A) Na2CO3.10H2O 
B) NaHCO3  
C) NaHSO4  
D) Na2SO4  
E) Na2CO3  
A) Na2CO3.10H2O 
B) NaHCO3  
C) NaHSO4  
D) Na2SO4  
E) Na2CO3

The stable forms of chlorine,bromine,and iodine at 25^$\circ$C and 1 atm are

All the following acids have pK_as smaller than 2.0 except

State whether each of the following oxides is acidic,basic,or amphoteric. P₂O₅ NO₂ Sb₂O₃ As₄O₆ Bi₂O₃

Which of the following molecules requires the most energy to split into gaseous atoms?

The nitrate ion can act as a reducing agent only in redox reactions.

The sublimation of "dry ice" is spontaneous at 25^$\circ$C and 1 atm.What are the signs of $\Delta$ H^$\circ$and $\Delta$ S^$\circ$,respectively?

Write an equation for the first ionization energy of sodium.

Silane is produced in the following reactions. a.SiCl₄ + LiAlH₄ $\rightarrow$ SiH₄ + LiAlCl₄ b.Mg₂Si + 4HCl $\rightarrow$ SiH₄ + 2MgCl₂ Classify each reaction as a redox or displacement reaction.

Which of the following is unstable?

When hydrogen peroxide disproportionates it forms water and oxygen gas.

Which of the following is the weakest acid?

The geometry of PCl₄⁺ is

Which of the following reacts only as a reducing agent?

Dinitrogen trioxide can be prepared by

All of the following react with water to form hydrogen and a hydroxide except

Which of the following are all allotropes?

All of the following elements form hydrides except

The products of the disproportionation of chlorine in water are

The compound BeI₂ is an ionic compound.

What is the formula of baking soda?

The Quantum World

Quantum Mechanics in Action: Atoms

Chemical Bonds

Molecular Shape and Structure

The Properties of Gases

Liquids and Solids

Inorganic Materials

Thermodynamics: The First Law

Thermodynamics: The Second and Third Laws

Physical Equilibria

Chemical Equilibria

Acids and Bases

Aqueous Equilibria

Electrochemistry

Chemical Kinetics

The Elements: The D Block

Nuclear Chemistry

Organic Chemistry I

Organic Chemistry II

Filters

Exam 16: The Elements: the Main Group Elements

The stable forms of chlorine,bromine,and iodine at 25 ∘\circ∘ C and 1 atm are

All the following acids have pKas smaller than 2.0 except

State whether each of the following oxides is acidic,basic,or amphoteric. P2O5 NO2 Sb2O3 As4O6 Bi2O3

Which of the following molecules requires the most energy to split into gaseous atoms?

The nitrate ion can act as a reducing agent only in redox reactions.

The sublimation of "dry ice" is spontaneous at 25 ∘\circ∘ C and 1 atm.What are the signs of Δ\DeltaΔ H ∘\circ∘ and Δ\DeltaΔ S ∘\circ∘ ,respectively?

Write an equation for the first ionization energy of sodium.

Silane is produced in the following reactions. a.SiCl4 + LiAlH4 →\rightarrow→ SiH4 + LiAlCl4 b.Mg2Si + 4HCl →\rightarrow→ SiH4 + 2MgCl2 Classify each reaction as a redox or displacement reaction.

Which of the following is unstable?

When hydrogen peroxide disproportionates it forms water and oxygen gas.

Which of the following is the weakest acid?

The geometry of PCl4+ is

Which of the following reacts only as a reducing agent?

Dinitrogen trioxide can be prepared by

All of the following react with water to form hydrogen and a hydroxide except

Which of the following are all allotropes?

All of the following elements form hydrides except

The products of the disproportionation of chlorine in water are

The compound BeI2 is an ionic compound.

What is the formula of baking soda?

The Quantum World

Quantum Mechanics in Action: Atoms

Chemical Bonds

Molecular Shape and Structure

The Properties of Gases

Liquids and Solids

Inorganic Materials

Thermodynamics: The First Law

Thermodynamics: The Second and Third Laws

Physical Equilibria

Chemical Equilibria

Acids and Bases

Aqueous Equilibria

Electrochemistry

Chemical Kinetics

The Elements: The D Block

Nuclear Chemistry

Organic Chemistry I

Organic Chemistry II

Filters

The stable forms of chlorine,bromine,and iodine at 25^$\circ$C and 1 atm are

All the following acids have pK_as smaller than 2.0 except

State whether each of the following oxides is acidic,basic,or amphoteric. P₂O₅ NO₂ Sb₂O₃ As₄O₆ Bi₂O₃

The sublimation of "dry ice" is spontaneous at 25^$\circ$C and 1 atm.What are the signs of $\Delta$ H^$\circ$and $\Delta$ S^$\circ$,respectively?

Silane is produced in the following reactions. a.SiCl₄ + LiAlH₄ $\rightarrow$ SiH₄ + LiAlCl₄ b.Mg₂Si + 4HCl $\rightarrow$ SiH₄ + 2MgCl₂ Classify each reaction as a redox or displacement reaction.

The geometry of PCl₄⁺ is

The compound BeI₂ is an ionic compound.