Question 1

What is the oxidation number of the sulfur atom in S8?

Accepted Answer

A) -2 
B) 0 
C) +6 
D) +8 
A) -2 
B) 0 
C) +6 
D) +8

Question 2

What is the molar concentration of sodium ions in a 0.350 M Na3PO4 solution?

Accepted Answer

A) 0)117 M 
B) 0)350 M 
C) 1)05 M 
D) 1)40 M 
A) 0)117 M 
B) 0)350 M 
C) 1)05 M 
D) 1)40 M

Question 3

Which elements will not react with liquid water but will react with aqueous H+ ions?

Accepted Answer

A) Ag,Cu,Hg,Pt 
B) Al,Cr,Mn,Zn 
C) Ba,Ca,Li,Na 
D) Ag,Au,Ca,K 
A) Ag,Cu,Hg,Pt 
B) Al,Cr,Mn,Zn 
C) Ba,Ca,Li,Na 
D) Ag,Au,Ca,K

Question 4

Assume that an aqueous solution of a cation,represented by shaded spheres,is allowed to mix with a solution of an anion,represented by unshaded spheres.Three possible outcomes are represented by boxes (a)-(c).  
-Which outcome corresponds to the combination of copper(II)and sulfide ions shown in the following equation?
Cu2+(aq)+ S2-(aq)→ ?

Accepted Answer

A) box (a) 
B) box (b) 
C) box (c) 
D) None of these 
A) box (a) 
B) box (b) 
C) box (c) 
D) None of these

Question 5

In which compound is the oxidation state of hydrogen not +1?

Accepted Answer

A) H2O 
B) H2O2 
C) NaH 
D) Na2HSO4 
A) H2O 
B) H2O2 
C) NaH 
D) Na2HSO4

Question 6

According to the balanced chemical equation
5 H2C2O4(aq)+ 2 MnO4-(aq)+ 6 H+(aq)→ 10 CO2(g)+ 2 Mn2+(aq)+ 8 H2O(l)
0)3500 grams of oxalic acid,H2C2O4 will react with ________ mL of 0.100 M potassium permanganate,KMnO4 solution.

Accepted Answer

A) 15.5 mL 
B) 38.9 mL 
C) 77.7 mL 
D) 97.2 mL 
A) 15.5 mL 
B) 38.9 mL 
C) 77.7 mL 
D) 97.2 mL

Question 7

Because it forms some H+ and OCl- ions when dissolved in water,the molecule HOCl is classified as a(n)________.

Accepted Answer

Question 8

Determine the number of water molecules necessary to balance the reduction half reaction of
____ MnO4-(aq)→ ____ MnO2(s)that occurs in a basic solution.

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 5 
A) 2 
B) 3 
C) 4 
D) 5

Question 9

The substance is undergoing oxidation in the reaction below is ________.
2 S2O32-(aq)+ I3-(aq)→ S4O62-(aq)+ 3 I-(aq)

Accepted Answer

Question 10

In the reaction 2 H2O2(l)→ 2 H2O(l)+ O2(g)oxygen is

Accepted Answer

A) both oxidized and reduced. 
B) neither oxidized nor reduced. 
C) only oxidized. 
D) only reduced. 
A) both oxidized and reduced. 
B) neither oxidized nor reduced. 
C) only oxidized. 
D) only reduced.

Question 11

Phthalic acid is a diprotic acid having the formula HO2CC6H4CO2H that can be converted to a salt by reaction with base.Which of the following is expected to be most soluble in water?

Accepted Answer

A) HO2CC6H4CO2H 
B) HO2CC6H4CO2Na 
C) HO2CC6H4CO2K 
D) NaO2CC6H4CO2K 
A) HO2CC6H4CO2H 
B) HO2CC6H4CO2Na 
C) HO2CC6H4CO2K 
D) NaO2CC6H4CO2K

Question 12

The mixing of which pair of reactants will result in a precipitation reaction?

Accepted Answer

A) CsI(aq)+ NaOH(aq) 
B) HCl(aq)+ Ca(OH)2(aq) 
C) K2SO4(aq)+ Hg2(NO3)2(aq) 
D) NaNO3(aq)+ NH4Cl(aq) 
A) CsI(aq)+ NaOH(aq) 
B) HCl(aq)+ Ca(OH)2(aq) 
C) K2SO4(aq)+ Hg2(NO3)2(aq) 
D) NaNO3(aq)+ NH4Cl(aq)

Question 13

The hydrogen ion,H+,is also referred to as a ________,and a hydrated hydrogen ion,H3O+,is called a ________ ion.

Accepted Answer

Question 14

What reagent could be used to separate Br- from NO3- when added to an aqueous solution containing both?

Accepted Answer

A) AgNO3(aq) 
B) Ba(OH)2(aq) 
C) CuSO4(aq) 
D) NaI(aq) 
A) AgNO3(aq) 
B) Ba(OH)2(aq) 
C) CuSO4(aq) 
D) NaI(aq)

Question 15

Assume that an aqueous solution of hydroxide ion,OHS1U1P1-S1S1P0,represented by unshaded spheres,is allowed to mix with a solution of an acid,HS1U1B1nS1U1B0A,represented by gray spheres.Three possible outcomes are represented by boxes (a)-(c),where the black spheres represent AS1U1P1nS1S1P0S1U1P1-S1S1P0,the anion of the acid.For clarity HS1U1B12S1U1B0O molecules are not shown.  
-Which outcome corresponds to the reaction:
HCN + OH- → H2O + CN-?

Accepted Answer

A) box (a) 
B) box (b) 
C) box (c) 
D) None of these 
A) box (a) 
B) box (b) 
C) box (c) 
D) None of these

Question 16

Which pair of compounds is soluble in water?

Accepted Answer

A) AgBr and AgI 
B) CdS and (NH4)2S 
C) KI and Ba(NO3)2 
D) NaNO3 and CuCO3 
A) AgBr and AgI 
B) CdS and (NH4)2S 
C) KI and Ba(NO3)2 
D) NaNO3 and CuCO3

Question 17

Metals that do not react with hydrochloric acid to produce hydrogen gas are found ________ H2 in the activity series.

Accepted Answer

Question 18

What reagent could not be used to separate Br- from CO32- when added to an aqueous solution containing both?

Accepted Answer

A) AgNO3 (aq) 
B) Ca(NO3)2 (aq) 
C) Cu(NO3)2 (aq) 
D) Fe(NO3)2(aq) 
A) AgNO3 (aq) 
B) Ca(NO3)2 (aq) 
C) Cu(NO3)2 (aq) 
D) Fe(NO3)2(aq)

Question 19

When K2SO4(aq)and Pb(NO3)2(aq)are mixed,a white colored precipitate forms which is

Accepted Answer

A) KNO3. 
B) K2SO3. 
C) Pb. 
D) PbSO4. 
A) KNO3. 
B) K2SO3. 
C) Pb. 
D) PbSO4.

Question 20

An aqueous solution of HI is named

Accepted Answer

A) hydriodic acid. 
B) hydroiodous acid. 
C) iodic acid. 
D) iodous acid. 
A) hydriodic acid. 
B) hydroiodous acid. 
C) iodic acid. 
D) iodous acid.

Exam 4: Reactions in Aqueous Solutions

What is the oxidation number of the sulfur atom in S8?

What is the molar concentration of sodium ions in a 0.350 M Na3PO4 solution?

Which elements will not react with liquid water but will react with aqueous H+ ions?

In which compound is the oxidation state of hydrogen not +1?

According to the balanced chemical equation 5 H2C2O4(aq)+ 2 MnO4-(aq)+ 6 H+(aq)→ 10 CO2(g)+ 2 Mn2+(aq)+ 8 H2O(l) 0)3500 grams of oxalic acid,H2C2O4 will react with ________ mL of 0.100 M potassium permanganate,KMnO4 solution.

Because it forms some H+ and OCl- ions when dissolved in water,the molecule HOCl is classified as a(n)________.

Determine the number of water molecules necessary to balance the reduction half reaction of ____ MnO4-(aq)→ ____ MnO2(s)that occurs in a basic solution.

The substance is undergoing oxidation in the reaction below is ________. 2 S2O32-(aq)+ I3-(aq)→ S4O62-(aq)+ 3 I-(aq)

In the reaction 2 H2O2(l)→ 2 H2O(l)+ O2(g)oxygen is

Phthalic acid is a diprotic acid having the formula HO2CC6H4CO2H that can be converted to a salt by reaction with base.Which of the following is expected to be most soluble in water?

The mixing of which pair of reactants will result in a precipitation reaction?

The hydrogen ion,H+,is also referred to as a ________,and a hydrated hydrogen ion,H3O+,is called a ________ ion.

What reagent could be used to separate Br- from NO3- when added to an aqueous solution containing both?

Which pair of compounds is soluble in water?

Metals that do not react with hydrochloric acid to produce hydrogen gas are found ________ H2 in the activity series.

What reagent could not be used to separate Br- from CO32- when added to an aqueous solution containing both?

When K2SO4(aq)and Pb(NO3)2(aq)are mixed,a white colored precipitate forms which is

An aqueous solution of HI is named

Chemistry: Matter and Measurement

Atoms, molecules, and Ions

Formulas, equations, and Moles

Periodicity and the Atomic Structure of Atoms

Ionic Bonds and Some Main-Group Chemistry

Covalent Bonds and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids,solids,and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Hydrogen, oxygen, and Water

The Main-Group Elements

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

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Filters

What is the oxidation number of the sulfur atom in S₈?

What is the molar concentration of sodium ions in a 0.350 M Na₃PO₄ solution?

Which elements will not react with liquid water but will react with aqueous H⁺ ions?

According to the balanced chemical equation 5 H₂C₂O₄(aq)+ 2 MnO₄^-(aq)+ 6 H⁺(aq)→ 10 CO₂(g)+ 2 Mn²⁺(aq)+ 8 H₂O(l) 0)3500 grams of oxalic acid,H₂C₂O₄ will react with ________ mL of 0.100 M potassium permanganate,KMnO₄ solution.

Because it forms some H⁺ and OCl^- ions when dissolved in water,the molecule HOCl is classified as a(n)________.

Determine the number of water molecules necessary to balance the reduction half reaction of MnO₄^-(aq)→ MnO₂(s)that occurs in a basic solution.

The substance is undergoing oxidation in the reaction below is ________. 2 S₂O₃^2-(aq)+ I₃^-(aq)→ S₄O₆^2-(aq)+ 3 I^-(aq)

In the reaction 2 H₂O₂(l)→ 2 H₂O(l)+ O₂(g)oxygen is

Phthalic acid is a diprotic acid having the formula HO₂CC₆H₄CO₂H that can be converted to a salt by reaction with base.Which of the following is expected to be most soluble in water?

The hydrogen ion,H⁺,is also referred to as a ,and a hydrated hydrogen ion,H₃O⁺,is called a ion.

What reagent could be used to separate Br^- from NO₃^- when added to an aqueous solution containing both?

Metals that do not react with hydrochloric acid to produce hydrogen gas are found ________ H₂ in the activity series.

What reagent could not be used to separate Br^- from CO₃^2- when added to an aqueous solution containing both?

When K₂SO₄(aq)and Pb(NO₃)₂(aq)are mixed,a white colored precipitate forms which is