Question 1

Which of the following compounds has a hypervalent central atom?

Accepted Answer

A)  PCl5 
B)  PCl3 
C)  AsCl3 
D)  NCl3 
A)  PCl5 
B)  PCl3 
C)  AsCl3 
D)  NCl3

Question 2

The formula of phosphorus(V) oxide is

Accepted Answer

A)  P2O4. 
B)  P4O6. 
C)  P4O10. 
D)  PO2. 
E)  P2O3. 
A)  P2O4. 
B)  P4O6. 
C)  P4O10. 
D)  PO2. 
E)  P2O3.

Question 3

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 4

Which of the following does not form a saline hydride?

Accepted Answer

A)  Lithium 
B)  Barium 
C)  Calcium 
D)  Magnesium 
E)  Beryllium 
A)  Lithium 
B)  Barium 
C)  Calcium 
D)  Magnesium 
E)  Beryllium

Question 5

The starting material for the production of sulfuric acid by the contact process is

Accepted Answer

A)  H2S(g). 
B)  H2S2O7(l). 
C)  S(g). 
D)  SO3(g). 
E)  SO2(g). 
A)  H2S(g). 
B)  H2S2O7(l). 
C)  S(g). 
D)  SO3(g). 
E)  SO2(g).

Question 6

Lithium and sodium burn in air to produce

Accepted Answer

A)  Li2O(s) and Na2O(s). 
B)  LiO2(s) and Na2O(s). 
C)  Li2O(s) and Na2O2(s). 
D)  LiO2(s) and Na2O2(s). 
E)  Li2O2(s) and NaO2(s). 
A)  Li2O(s) and Na2O(s). 
B)  LiO2(s) and Na2O(s). 
C)  Li2O(s) and Na2O2(s). 
D)  LiO2(s) and Na2O2(s). 
E)  Li2O2(s) and NaO2(s).

Question 7

When hydrogen peroxide disproportionates it forms water and oxygen gas.

Accepted Answer

A) True 
 B)False

Question 8

Given that N2O3(g) dissociates to NO(g) And NO2(g),How many lone pairs of electrons are in the Lewis structure of N2O3?

Accepted Answer

A)  2 
B)  6 
C)  1 
D)  4 
E)  8 
A)  2 
B)  6 
C)  1 
D)  4 
E)  8

Question 9

The anhydrous material with the common name "Epsom salts" has what chemical formula?

Accepted Answer

A)  MgSO4  
B)  Mg(OH)2  
C)  CaSO4  
D)  CaCl2  
E)  MgCl2  
A)  MgSO4  
B)  Mg(OH)2  
C)  CaSO4  
D)  CaCl2  
E)  MgCl2

Question 10

Magnesium nitride dissolves in water to produce

Accepted Answer

A)  HNO3(aq) and MgO(s). 
B)  N2(g) and MgO(s). 
C)  NH3(g) and Mg(OH)2(s). 
D)  Mg(NO3)2(aq). 
E)  N2H4(l) and Mg(OH)2(s). 
A)  HNO3(aq) and MgO(s). 
B)  N2(g) and MgO(s). 
C)  NH3(g) and Mg(OH)2(s). 
D)  Mg(NO3)2(aq). 
E)  N2H4(l) and Mg(OH)2(s).

Question 11

When phosphoric acid is heated it undergoes a ________________ reaction.

Accepted Answer

The answer of When phosphoric acid is heated it undergoes...

Question 12

Quicklime, CaO(s),Reacts with C(s)To produce A plus carbon monoxide.When A is added to water,B and C are produced.Write the formulas of A,B,And C.

Accepted Answer

A)  Ca(s), O2(g), and Ca(OH)2(aq) 
B)  CaO(s) does not react with C(s). 
C)  CaC2(s), H2(g), and Ca(OH)2(aq) 
D)  Ca(s), H2(g), and Ca(OH)2(aq) 
E)  CaC2(s), C2H2(g), and Ca(OH)2(aq) 
A)  Ca(s), O2(g), and Ca(OH)2(aq) 
B)  CaO(s) does not react with C(s). 
C)  CaC2(s), H2(g), and Ca(OH)2(aq) 
D)  Ca(s), H2(g), and Ca(OH)2(aq) 
E)  CaC2(s), C2H2(g), and Ca(OH)2(aq)

Question 13

The role of magnesium in chlorophyll is

Accepted Answer

A)  that of a hydrogenation catalyst. 
B)  to keep the ring rigid. 
C)  that of a reducing agent. 
D)  that of an oxidizing agent. 
E)  to react with water to produce hydrogen. 
A)  that of a hydrogenation catalyst. 
B)  to keep the ring rigid. 
C)  that of a reducing agent. 
D)  that of an oxidizing agent. 
E)  to react with water to produce hydrogen.

Question 14

Which of the following can act as Lewis acid(s)?

Accepted Answer

A)  NO. 
B)  SO3.  
C)  CO2. 
D)  Na2O.  
E)  A through C can.  
A)  NO. 
B)  SO3.  
C)  CO2. 
D)  Na2O.  
E)  A through C can.

Question 15

What is the shape of ClF2+?

Accepted Answer

A)  Bent (~120o) 
B)  Trigonal bipyramidal 
C)  Ttetrahedral 
D)  Linear 
E)  Bent (~109o) 
A)  Bent (~120o) 
B)  Trigonal bipyramidal 
C)  Ttetrahedral 
D)  Linear 
E)  Bent (~109o)

Question 16

The reaction of XeF4(s) with Pt(s)
Produces

Accepted Answer

A)  Xe(g) and PtF6(s). 
B)  XeF2(s) and PtF2(s). 
C)  dimeric XeF2PtF4(s). 
D)  Xe(g) and PtF4(s). 
E)  XeF2(s) and PtF4(s). 
A)  Xe(g) and PtF6(s). 
B)  XeF2(s) and PtF2(s). 
C)  dimeric XeF2PtF4(s). 
D)  Xe(g) and PtF4(s). 
E)  XeF2(s) and PtF4(s).

Question 17

Ammonium nitrate is explosive because

Accepted Answer

A)  the ammonium ion decomposes readily. 
B)  the ammonium ion can be oxidized by the nitrate ion. 
C)  the nitrate ion decomposes readily. 
D)  the ammonium ion is readily reduced. 
E)  nitrate reacts readily with oxygen in air. 
A)  the ammonium ion decomposes readily. 
B)  the ammonium ion can be oxidized by the nitrate ion. 
C)  the nitrate ion decomposes readily. 
D)  the ammonium ion is readily reduced. 
E)  nitrate reacts readily with oxygen in air.

Question 18

All of the following are silicon-oxygen compounds except

Accepted Answer

A)  asbestos. 
B)  quartz. 
C)  talc. 
D)  diamond. 
E)  mica. 
A)  asbestos. 
B)  quartz. 
C)  talc. 
D)  diamond. 
E)  mica.

Question 19

What was the key idea that led to the synthesis of fluorine and oxygen compounds of xenon?

Accepted Answer

that the ionization

Question 20

Trends in electron affinity are similar to those for ionization energy.

Accepted Answer

A) True 
 B)False

Which of the following compounds has a hypervalent central atom?

The formula of phosphorus(V) oxide is

Which of the following reacts only as a reducing agent?

Which of the following does not form a saline hydride?

The starting material for the production of sulfuric acid by the contact process is

Lithium and sodium burn in air to produce

When hydrogen peroxide disproportionates it forms water and oxygen gas.

Given that N₂O₃(g) dissociates to NO(g) And NO₂(g),How many lone pairs of electrons are in the Lewis structure of N₂O₃?

The anhydrous material with the common name "Epsom salts" has what chemical formula?

Magnesium nitride dissolves in water to produce

When phosphoric acid is heated it undergoes a ________________ reaction.

Quicklime, CaO(s),Reacts with C(s)To produce A plus carbon monoxide.When A is added to water,B and C are produced.Write the formulas of A,B,And C.

The role of magnesium in chlorophyll is

Which of the following can act as Lewis acid(s)?

What is the shape of ClF₂⁺?

The reaction of XeF₄(s) with Pt(s) Produces

Ammonium nitrate is explosive because

All of the following are silicon-oxygen compounds except

What was the key idea that led to the synthesis of fluorine and oxygen compounds of xenon?

Trends in electron affinity are similar to those for ionization energy.

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 of the following compounds has a hypervalent central atom?

The formula of phosphorus(V) oxide is

Which of the following reacts only as a reducing agent?

Which of the following does not form a saline hydride?

The starting material for the production of sulfuric acid by the contact process is

Lithium and sodium burn in air to produce

When hydrogen peroxide disproportionates it forms water and oxygen gas.

Given that N2O3(g) dissociates to NO(g) And NO2(g),How many lone pairs of electrons are in the Lewis structure of N2O3?

The anhydrous material with the common name "Epsom salts" has what chemical formula?

Magnesium nitride dissolves in water to produce

When phosphoric acid is heated it undergoes a ________________ reaction.

Quicklime, CaO(s),Reacts with C(s)To produce A plus carbon monoxide.When A is added to water,B and C are produced.Write the formulas of A,B,And C.

The role of magnesium in chlorophyll is

Which of the following can act as Lewis acid(s)?

What is the shape of ClF2+?

The reaction of XeF4(s) with Pt(s) Produces

Ammonium nitrate is explosive because

All of the following are silicon-oxygen compounds except

What was the key idea that led to the synthesis of fluorine and oxygen compounds of xenon?

Trends in electron affinity are similar to those for ionization energy.

Atoms

Molecules

States of Matter

Thermodynamics

Equilibrium

Reactions

Kinetics

The D-Block Elements

Nuclear Chemistry

Organic Chemistry

Filters

Given that N₂O₃(g) dissociates to NO(g) And NO₂(g),How many lone pairs of electrons are in the Lewis structure of N₂O₃?

What is the shape of ClF₂⁺?

The reaction of XeF₄(s) with Pt(s) Produces