Question 1

Which Group 13 element is most likely to have an oxidation number of +1 in its compounds?

Accepted Answer

The answer of Which Group 13 element is most likely...

Question 2

Which of the following does not act as a Lewis acid?

Accepted Answer

A)  Na2O 
B)  NO  
C)  NO2 
D)  SO3  
E)  CO2  
A)  Na2O 
B)  NO  
C)  NO2 
D)  SO3  
E)  CO2

Question 3

Which of the following metals, Ag,Zn,Cu,Ni,Au,Pt,Sn,Cannot be extracted by hydrometallurgical reduction of their ions with hydrogen?

Accepted Answer

A)  Au, Pt 
B)  Ag, Au, Pt 
C)  Zn, Ni, Au 
D)  Zn, Ni, Sn 
E)  Ag, Cu, Au, Pt 
A)  Au, Pt 
B)  Ag, Au, Pt 
C)  Zn, Ni, Au 
D)  Zn, Ni, Sn 
E)  Ag, Cu, Au, Pt

Question 4

In the following reaction,what role does CO play?
PbO(s)+ CO(g)$\rightarrow$ Pb(s)+ CO2(g).

Accepted Answer

It is a re

Question 5

Which of the following is not a redox reaction?

Accepted Answer

A)  3Mg + N2 $\rightarrow$Mg3N2 
B)  2P3-+6H2O $\rightarrow$ 2PH3 + 6OH- 
C)  2NaN3 $\rightarrow$ 2Na + N2 
D)  2NO + O2 $\rightarrow$2NO2 
E)  N2H4 + O2 $\rightarrow$N2 + 2H2O 
A)  3Mg + N2 $\rightarrow$Mg3N2 
B)  2P3-+6H2O $\rightarrow$ 2PH3 + 6OH- 
C)  2NaN3 $\rightarrow$ 2Na + N2 
D)  2NO + O2 $\rightarrow$2NO2 
E)  N2H4 + O2 $\rightarrow$N2 + 2H2O

Question 6

All of the oxides of the following elements are amphoteric except

Accepted Answer

A)  P 
B)  Ga 
C)  As 
D)  Sb 
A)  P 
B)  Ga 
C)  As 
D)  Sb

Question 7

In the thermite reaction,iron (III)oxide is the reducing agent.

Accepted Answer

A) True 
 B)False

Question 8

What occurs when beryllium is added to aqueous sodium hydroxide?

Accepted Answer

A)  Be(OH)S1U1B12S1U1B0(s) precipitates. 
B)  Beryllium dissolves to form [Be(OH)S1U1B14S1U1B0]S1U1P12-S1S1P0(aq). 
C)  Beryllium dissolves to form [Be(OHS1U1B12S1U1B0)S1U1B16S1U1B0]S1U1P12+S1S1P0(aq). 
D)  OS1U1B12S1U1B0(g) is produced. 
E)  No reaction occurs because beryllium is not soluble in aqueous sodium hydroxide. 
A)  Be(OH)S1U1B12S1U1B0(s) precipitates. 
B)  Beryllium dissolves to form [Be(OH)S1U1B14S1U1B0]S1U1P12-S1S1P0(aq). 
C)  Beryllium dissolves to form [Be(OHS1U1B12S1U1B0)S1U1B16S1U1B0]S1U1P12+S1S1P0(aq). 
D)  OS1U1B12S1U1B0(g) is produced. 
E)  No reaction occurs because beryllium is not soluble in aqueous sodium hydroxide.

Question 9

What is the formula of quicklime?

Accepted Answer

A)  CaO 
B)  MgSO4  
C)  Ca(OH)2  
D)  CaCO3  
E)  CaSO4  
A)  CaO 
B)  MgSO4  
C)  Ca(OH)2  
D)  CaCO3  
E)  CaSO4

Question 10

The lattice enthalpies of ionic compounds of fluoride tend to be very high because

Accepted Answer

A)  fluorine has a high electronegativity. 
B)  fluoride ion has an oxidation state of -1. 
C)  fluorine gas is very reactive. 
D)  the fluoride ion is small. 
E)  fluorine is a strong oxidant. 
A)  fluorine has a high electronegativity. 
B)  fluoride ion has an oxidation state of -1. 
C)  fluorine gas is very reactive. 
D)  the fluoride ion is small. 
E)  fluorine is a strong oxidant.

Question 11

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 12

Which of the following noble gases is likely to have the smallest ionization energy?

Accepted Answer

A)  Xe 
B)  Kr 
C)  He 
D)  Ne 
E)  Ar 
A)  Xe 
B)  Kr 
C)  He 
D)  Ne 
E)  Ar

Question 13

Which of the following pairs of elements have similar polarizability?

Accepted Answer

A)  Be and Al 
B)  Li and Na 
C)  B and Al 
D)  Be and Mg 
E)  Mg and B 
A)  Be and Al 
B)  Li and Na 
C)  B and Al 
D)  Be and Mg 
E)  Mg and B

Question 14

Which of the following pairs of elements both have acidic oxides?

Accepted Answer

A)  Ca and As 
B)  Mg and Al 
C)  B and Li 
D)  In and Sn 
E)  P and Se 
A)  Ca and As 
B)  Mg and Al 
C)  B and Li 
D)  In and Sn 
E)  P and Se

Question 15

Which of the following is a basic oxide?

Accepted Answer

A)  CaO(s) 
B)  CO2(g) 
C)  SO2(g) 
D)  CO(g) 
E)  SiO2(s) 
A)  CaO(s) 
B)  CO2(g) 
C)  SO2(g) 
D)  CO(g) 
E)  SiO2(s)

Question 16

Write the reaction for the disproportionation of nitrogen dioxide in water.

Accepted Answer

3NO₂(g)+ H₂O

Question 17

The complex (NH3)5RuN22+ can be synthesized by the reaction of hydrazine with RuCl3.In this reaction,the reducing agent is ____________ and the oxidizing agent is ____________.

Accepted Answer

Question 18

Consider the reaction
Fe(ClO4)3(aq)+ 6H2O(l)$\rightarrow$ Fe(H2O)63+ + 3ClO4-(aq)
Which of the following statements are true?

Accepted Answer

A)  Fe(ClO4)3 acts as a Lewis base. 
B)  H2O acts as a Lewis acid. 
C)  H2O acts as a Lewis base. 
D)  H2O acts as a Brønsted acid. 
E)  H2O acts as a Brønsted base. 
A)  Fe(ClO4)3 acts as a Lewis base. 
B)  H2O acts as a Lewis acid. 
C)  H2O acts as a Lewis base. 
D)  H2O acts as a Brønsted acid. 
E)  H2O acts as a Brønsted base.

Question 19

The preparation of HI(g)by the reaction of KI(s)with phosphoric acid is not a redox reaction.

Accepted Answer

A) True 
 B)False

Question 20

Order the following acids from weakest to strongest: HClO, HClO4,HClO2, HClO3.

Accepted Answer

A)  HClO 3 4 2  
B)  HClO4 2 3  
C)  HClO 4 3 2  
D)  HClO4 3 2 2 3 4  
A)  HClO 3 4 2  
B)  HClO4 2 3  
C)  HClO 4 3 2  
D)  HClO4 3 2 2 3 4

Which Group 13 element is most likely to have an oxidation number of +1 in its compounds?

Which of the following does not act as a Lewis acid?

Which of the following metals, Ag,Zn,Cu,Ni,Au,Pt,Sn,Cannot be extracted by hydrometallurgical reduction of their ions with hydrogen?

In the following reaction,what role does CO play? PbO(s)+ CO(g) $\rightarrow$ Pb(s)+ CO₂(g).

Which of the following is not a redox reaction?

All of the oxides of the following elements are amphoteric except

In the thermite reaction,iron (III)oxide is the reducing agent.

What occurs when beryllium is added to aqueous sodium hydroxide?

What is the formula of quicklime?

The lattice enthalpies of ionic compounds of fluoride tend to be very high because

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 noble gases is likely to have the smallest ionization energy?

Which of the following pairs of elements have similar polarizability?

Which of the following pairs of elements both have acidic oxides?

Which of the following is a basic oxide?

Write the reaction for the disproportionation of nitrogen dioxide in water.

The complex (NH₃)₅RuN₂²⁺ can be synthesized by the reaction of hydrazine with RuCl₃.In this reaction,the reducing agent is and the oxidizing agent is .

Consider the reaction Fe(ClO₄)₃(aq)+ 6H₂O(l) $\rightarrow$ Fe(H₂O)₆³⁺ + 3ClO₄^-(aq) Which of the following statements are true?

The preparation of HI(g)by the reaction of KI(s)with phosphoric acid is not a redox reaction.

Order the following acids from weakest to strongest: HClO, HClO₄,HClO₂, HClO₃.

Atoms

Molecules

States of Matter

Thermodynamics

Equilibrium

Reactions

Kinetics

The D-Block Elements

Nuclear Chemistry

Organic Chemistry

Filters

Exam 8: The Main-Group Elements

Which Group 13 element is most likely to have an oxidation number of +1 in its compounds?

Which of the following does not act as a Lewis acid?

Which of the following metals, Ag,Zn,Cu,Ni,Au,Pt,Sn,Cannot be extracted by hydrometallurgical reduction of their ions with hydrogen?

In the following reaction,what role does CO play? PbO(s)+ CO(g) →\rightarrow→ Pb(s)+ CO2(g).

Which of the following is not a redox reaction?

All of the oxides of the following elements are amphoteric except

In the thermite reaction,iron (III)oxide is the reducing agent.

What occurs when beryllium is added to aqueous sodium hydroxide?

What is the formula of quicklime?

The lattice enthalpies of ionic compounds of fluoride tend to be very high because

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 noble gases is likely to have the smallest ionization energy?

Which of the following pairs of elements have similar polarizability?

Which of the following pairs of elements both have acidic oxides?

Which of the following is a basic oxide?

Write the reaction for the disproportionation of nitrogen dioxide in water.

The complex (NH3)5RuN22+ can be synthesized by the reaction of hydrazine with RuCl3.In this reaction,the reducing agent is ____________ and the oxidizing agent is ____________.

Consider the reaction Fe(ClO4)3(aq)+ 6H2O(l) →\rightarrow→ Fe(H2O)63+ + 3ClO4-(aq) Which of the following statements are true?

The preparation of HI(g)by the reaction of KI(s)with phosphoric acid is not a redox reaction.

Order the following acids from weakest to strongest: HClO, HClO4,HClO2, HClO3.

Atoms

Molecules

States of Matter

Thermodynamics

Equilibrium

Reactions

Kinetics

The D-Block Elements

Nuclear Chemistry

Organic Chemistry

Filters

In the following reaction,what role does CO play? PbO(s)+ CO(g) $\rightarrow$ Pb(s)+ CO₂(g).

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 complex (NH₃)₅RuN₂²⁺ can be synthesized by the reaction of hydrazine with RuCl₃.In this reaction,the reducing agent is and the oxidizing agent is .

Consider the reaction Fe(ClO₄)₃(aq)+ 6H₂O(l) $\rightarrow$ Fe(H₂O)₆³⁺ + 3ClO₄^-(aq) Which of the following statements are true?

Order the following acids from weakest to strongest: HClO, HClO₄,HClO₂, HClO₃.