Question 1

Phosphorus(V) oxide reacts with water to produce

Accepted Answer

A)  H3PO2. 
B)  H3PO4. 
C)  HPO3. 
D)  H3PO3. 
E)  H3PO2-. 
A)  H3PO2. 
B)  H3PO4. 
C)  HPO3. 
D)  H3PO3. 
E)  H3PO2-.

Question 2

Which of the following does not involve CO acting as a reducing agent?

Accepted Answer

A)  PbO(s) + CO(g) $\rarr$ Pb(s) + CO2(g). 
B)  CO(g) + H2O(g) $\rarr$  CO2(g) + H2(g). 
C)  2CO(g) + O2(g) $\rarr$  2CO2(g). 
D)  Ni(s) + 4CO(g) $\rarr$ Ni(CO)4(g). 
E)  Fe2O3(s) + 3CO(g) $\rarr$  2Fe(s) + 3CO2(g). 
A)  PbO(s) + CO(g) $\rarr$ Pb(s) + CO2(g). 
B)  CO(g) + H2O(g) $\rarr$  CO2(g) + H2(g). 
C)  2CO(g) + O2(g) $\rarr$  2CO2(g). 
D)  Ni(s) + 4CO(g) $\rarr$ Ni(CO)4(g). 
E)  Fe2O3(s) + 3CO(g) $\rarr$  2Fe(s) + 3CO2(g).

Question 3

Which of the following compounds is predicted to have bonds with the most covalent character?

Accepted Answer

A)  MgF2  
B)  LiF 
C)  CsI 
D)  MgI2  
E)  BaBr2  
A)  MgF2  
B)  LiF 
C)  CsI 
D)  MgI2  
E)  BaBr2

Question 4

Aluminum metal is produced by

Accepted Answer

A)  reduction of Al2O3 with carbon. 
B)  electrolysis of a molten mixture of alumina, Al2O3, and cryolite, Na3AlF6. 
C)  treatment of Al2O3 with sodium hydroxide. 
D)  the thermite reaction. 
E)  electrolysis of brine containing Al2(SO4)3. 
A)  reduction of Al2O3 with carbon. 
B)  electrolysis of a molten mixture of alumina, Al2O3, and cryolite, Na3AlF6. 
C)  treatment of Al2O3 with sodium hydroxide. 
D)  the thermite reaction. 
E)  electrolysis of brine containing Al2(SO4)3.

Question 5

Solid sodium reduces nitrogen gas to form sodium nitride,Na3N.

Accepted Answer

A) True 
 B)False

Question 6

Both ammonia and phosphine are soluble in water.Which is less soluble? Why?

Accepted Answer

PH₃ is less soluble b

Question 7

The compound BeI2 is an ionic compound.

Accepted Answer

A) True 
 B)False

Question 8

What is the function of aluminum in the thermite reaction?

Accepted Answer

It is the

Question 9

What two types of bonds involving hydrogen does diborane exhibit?

Accepted Answer

Bridging h

Question 10

Order the following ions according to their radii from largest to smallest: 
HS1U1P1-S1S1P0 ,ClS1U1P1-S1S1P0, FS1U1P1-S1S1P0.

Accepted Answer

The answer of Order the following ions according to their...

Question 11

As written, the reaction 2I- + Br2 $\rarr$ 2 Br- + I2 represents:

Accepted Answer

A)  Oxidation of iodide to iodine. 
B)  Reduction of iodide to iodine. 
C)  An autoredox reaction of iodine. 
D)  Oxidation of bromine to bromide. 
E)  Oxidation of bromide to bromine. 
A)  Oxidation of iodide to iodine. 
B)  Reduction of iodide to iodine. 
C)  An autoredox reaction of iodine. 
D)  Oxidation of bromine to bromide. 
E)  Oxidation of bromide to bromine.

Question 12

Polarizability is a measure of the ease with which an electron cloud can be distorted and is greatest for electron-rich atoms like fluorine.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following has the largest bond enthalpy?

Accepted Answer

A)  HCl 
B)  All the bond enthalpies are the same. 
C)  HBr 
D)  HF 
E)  HI 
A)  HCl 
B)  All the bond enthalpies are the same. 
C)  HBr 
D)  HF 
E)  HI

Question 14

Which of the following is a covalent carbide?

Accepted Answer

A)  W2C 
B)  Fe3C 
C)  SrC2  
D)  CaC2  
E)  SiC 
A)  W2C 
B)  Fe3C 
C)  SrC2  
D)  CaC2  
E)  SiC

Question 15

What are the products of the reaction of calcium phosphide with dilute hydrochloric acid?

Accepted Answer

Phosphine

Question 16

The electron affinities of elements are always positive.

Accepted Answer

A) True 
 B)False

Question 17

Write the equation for the production of sulfur by the Claus process,identify the reducing agent,and state the total number of electrons transferred in the reaction.

Accepted Answer

2H₂S(g)+ SO₂(g)@#LAT-DLM& 3S(s)+ 2H₂O(l),H₂S

Question 18

Which of the following exists mainly as cations in compounds?

Accepted Answer

A)  P 
B)  Ga 
C)  As 
D)  Si 
E)  Sr 
A)  P 
B)  Ga 
C)  As 
D)  Si 
E)  Sr

Question 19

Which of the following is diamagnetic?

Accepted Answer

A)  O22- 
B)  NO2 
C)  O2 
D)  O2- 
A)  O22- 
B)  NO2 
C)  O2 
D)  O2-

Question 20

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.

Phosphorus(V) oxide reacts with water to produce

Which of the following does not involve CO acting as a reducing agent?

Which of the following compounds is predicted to have bonds with the most covalent character?

Aluminum metal is produced by

Solid sodium reduces nitrogen gas to form sodium nitride,Na₃N.

Both ammonia and phosphine are soluble in water.Which is less soluble? Why?

The compound BeI₂ is an ionic compound.

What is the function of aluminum in the thermite reaction?

What two types of bonds involving hydrogen does diborane exhibit?

Order the following ions according to their radii from largest to smallest: H^- ,Cl^-, F^-.

As written, the reaction 2I^- + Br₂ $\rarr$ 2 Br^- + I₂ represents:

Polarizability is a measure of the ease with which an electron cloud can be distorted and is greatest for electron-rich atoms like fluorine.

Which of the following has the largest bond enthalpy?

Which of the following is a covalent carbide?

What are the products of the reaction of calcium phosphide with dilute hydrochloric acid?

The electron affinities of elements are always positive.

Write the equation for the production of sulfur by the Claus process,identify the reducing agent,and state the total number of electrons transferred in the reaction.

Which of the following exists mainly as cations in compounds?

Which of the following is diamagnetic?

All the following acids have pK_as smaller than 2.0 except

Atoms

Molecules

States of Matter

Thermodynamics

Equilibrium

Reactions

Kinetics

The D-Block Elements

Nuclear Chemistry

Organic Chemistry

Filters

Exam 8: The Main-Group Elements

Phosphorus(V) oxide reacts with water to produce

Which of the following does not involve CO acting as a reducing agent?

Which of the following compounds is predicted to have bonds with the most covalent character?

Aluminum metal is produced by

Solid sodium reduces nitrogen gas to form sodium nitride,Na3N.

Both ammonia and phosphine are soluble in water.Which is less soluble? Why?

The compound BeI2 is an ionic compound.

What is the function of aluminum in the thermite reaction?

What two types of bonds involving hydrogen does diborane exhibit?

Order the following ions according to their radii from largest to smallest: H- ,Cl-, F-.

As written, the reaction 2I- + Br2 →\rarr→ 2 Br- + I2 represents:

Polarizability is a measure of the ease with which an electron cloud can be distorted and is greatest for electron-rich atoms like fluorine.

Which of the following has the largest bond enthalpy?

Which of the following is a covalent carbide?

What are the products of the reaction of calcium phosphide with dilute hydrochloric acid?

The electron affinities of elements are always positive.

Write the equation for the production of sulfur by the Claus process,identify the reducing agent,and state the total number of electrons transferred in the reaction.

Which of the following exists mainly as cations in compounds?

Which of the following is diamagnetic?

All the following acids have pKas smaller than 2.0 except

Atoms

Molecules

States of Matter

Thermodynamics

Equilibrium

Reactions

Kinetics

The D-Block Elements

Nuclear Chemistry

Organic Chemistry

Filters

Solid sodium reduces nitrogen gas to form sodium nitride,Na₃N.

The compound BeI₂ is an ionic compound.

Order the following ions according to their radii from largest to smallest: H^- ,Cl^-, F^-.

As written, the reaction 2I^- + Br₂ $\rarr$ 2 Br^- + I₂ represents:

All the following acids have pK_as smaller than 2.0 except