Question 1

The chemical formula for sulfurous acid is

Accepted Answer

A)  H2S(aq). 
B)  H2SO3(aq). 
C)  H2SO4(aq). 
D)  H2S2O7(aq). 
A)  H2S(aq). 
B)  H2SO3(aq). 
C)  H2SO4(aq). 
D)  H2S2O7(aq).

Question 2

How many grams of H2 gas can be produced by the reaction of 63.0 grams of Al(s)with an excess of dilute hydrochloric acid in the reaction shown below?
2 Al(s)+ 6 HCl(aq)→ 2 AlCl3(aq)+ 3 H2(g)

Accepted Answer

A)  3.13 g 
B)  4.71 g 
C)  7.06 g 
D)  14.1 g 
A)  3.13 g 
B)  4.71 g 
C)  7.06 g 
D)  14.1 g

Question 3

How many milliliters of a 0.266 M CsNO3 solution are required to make 150.0 mL of 0.075 M CsNO3 solution?

Accepted Answer

A)  53.2 mL 
B)  42.3 mL 
C)  18.8 mL 
D)  23.6 mL 
E)  35.1 mL 
A)  53.2 mL 
B)  42.3 mL 
C)  18.8 mL 
D)  23.6 mL 
E)  35.1 mL

Question 4

Give the net ionic equation for the reaction (if any)that occurs when aqueous solutions of H2SO4 and KOH are mixed.

Accepted Answer

A)  H+(aq) + OH-(aq) → H2O(l) 
B)  2 K+(aq) + SO42-(aq) → K2SO4(s) 
C)  H+(aq) + OH-(aq) + 2 K+(aq) + SO42-(aq) → H2O(l) + K2SO4(s) 
D)  H22+(aq) + OH-(aq) → H2(OH)2(l) 
E)  No reaction occurs. 
A)  H+(aq) + OH-(aq) → H2O(l) 
B)  2 K+(aq) + SO42-(aq) → K2SO4(s) 
C)  H+(aq) + OH-(aq) + 2 K+(aq) + SO42-(aq) → H2O(l) + K2SO4(s) 
D)  H22+(aq) + OH-(aq) → H2(OH)2(l) 
E)  No reaction occurs.

Question 5

An aqueous solution of H F is named

Accepted Answer

A)  hydrofluoric acid. 
B)  hydrofluorous acid. 
C)  fluoric acid. 
D)  fluorous acid. 
A)  hydrofluoric acid. 
B)  hydrofluorous acid. 
C)  fluoric acid. 
D)  fluorous acid.

Question 6

Determine the oxidation state of fluorine in F2.

Accepted Answer

A)  +5 
B)  +3 
C)  0 
D)  +2 
E)  +4 
A)  +5 
B)  +3 
C)  0 
D)  +2 
E)  +4

Question 7

What element is undergoing oxidation (if any)in the following reaction?
Zn(s)+ 2 AgNO3(aq)→ Zn(NO3)2(aq)+ 2 Ag(s)

Accepted Answer

A)  Zn 
B)  N 
C)  O 
D)  Ag 
E)  This is not an oxidation-reduction reaction. 
A)  Zn 
B)  N 
C)  O 
D)  Ag 
E)  This is not an oxidation-reduction reaction.

Question 8

According to the balanced equation shown below,2.00 moles of oxalic acid,H2C2O4,reacts with ________ moles of permanganate,MnO4-. 5 H2C2O4(aq)+ 2 MnO4-(aq)+ 6 H+(aq)→ 10 CO2(g)+ Mn2+(aq)+ 8 H2O(l)

Accepted Answer

A)  0.800 
B)  2.00 
C)  4.00 
D)  4.50 
A)  0.800 
B)  2.00 
C)  4.00 
D)  4.50

Question 9

What element is undergoing oxidation (if any)in the following reaction?
2 HCl(aq)+ Ca(OH)2(aq)→ 2 H2O(l)+ 2 CaCl2(aq)

Accepted Answer

A)  H 
B)  Cl 
C)  Ca 
D)  O 
E)  This is not an oxidation-reduction reaction 
A)  H 
B)  Cl 
C)  Ca 
D)  O 
E)  This is not an oxidation-reduction reaction

Question 10

Which of the following compounds is insoluble in water?

Accepted Answer

A)  Hg2Cl2 
B)  MgSO4 
C)  (NH4)2CO3 
D)  BaS 
E)  All of these compounds are soluble in water. 
A)  Hg2Cl2 
B)  MgSO4 
C)  (NH4)2CO3 
D)  BaS 
E)  All of these compounds are soluble in water.

Question 11

Determine the oxidation state of nitrogen in NO2.

Accepted Answer

A)  +5 
B)  +3 
C)  0 
D)  +2 
E)  +4 
A)  +5 
B)  +3 
C)  0 
D)  +2 
E)  +4

Question 12

How many grams of NaCl are required to make 300.0 mL of a 2.500 M solution?

Accepted Answer

A)  58.40 g 
B)  175.3 g 
C)  14.60 g 
D)  43.83 g 
A)  58.40 g 
B)  175.3 g 
C)  14.60 g 
D)  43.83 g

Question 13

Which of the following is an oxidation-reduction reaction?

Accepted Answer

A)  H I(aq) + LiOH(aq) → Li I(aq) + H2O(l) 
B)  Na Br(aq) + AgNO3(aq) → Ag Br(s) + NaNO3(aq) 
C)  Pb(C2H3O2)2(aq) + 2 NaCl(aq) → PbCl2(s) + 2 NaC2H3O2(aq) 
D)  Mg(s) + 2 HCl(aq) → MgCl2(aq) + H2(g) 
E)  All of the above are oxidation-reduction reactions. 
A)  H I(aq) + LiOH(aq) → Li I(aq) + H2O(l) 
B)  Na Br(aq) + AgNO3(aq) → Ag Br(s) + NaNO3(aq) 
C)  Pb(C2H3O2)2(aq) + 2 NaCl(aq) → PbCl2(s) + 2 NaC2H3O2(aq) 
D)  Mg(s) + 2 HCl(aq) → MgCl2(aq) + H2(g) 
E)  All of the above are oxidation-reduction reactions.

Question 14

What is the concentration of FeCl3 in a solution prepared by dissolving 30.0 g of FeCl3 in enough water to make 275 mL of solution?

Accepted Answer

A)  6.73 × 10-4 M 
B)  0. 673 M 
C)  1.49 M 
D)  1.49 × 103 M 
A)  6.73 × 10-4 M 
B)  0. 673 M 
C)  1.49 M 
D)  1.49 × 103 M

Question 15

Identify the oxidation state of Cr in Cr F3(s). 2 Cr(s)+ 6 H F(g)→ 2 Cr F3(s)+3 H2(g)

Accepted Answer

A)  +1 
B)  +2 
C)  +3 
D)  0 
E)  -1 
A)  +1 
B)  +2 
C)  +3 
D)  0 
E)  -1

Question 16

List the spectator ions in the following reaction.
Ba+2(aq)+ 2 OH-(aq)+ 2 Na +(aq)+ CO3 -2(aq)→ 2 Na +(aq)+ 2 OH-(aq)+ BaCO3(s)

Accepted Answer

Question 17

What reagent could NOT be used to separate I- from OH - 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 18

How many moles of CH3CH2Cl are contained in 548 mL of 0.0788 M CH3CH2Cl solution?

Accepted Answer

A)  4.32 × 10-2 mol 
B)  2.32 × 10-2 mol 
C)  6.95 × 10-2 mol 
D)  1.44 × 10-2 mol 
E)  5.26 × 10-2 mol 
A)  4.32 × 10-2 mol 
B)  2.32 × 10-2 mol 
C)  6.95 × 10-2 mol 
D)  1.44 × 10-2 mol 
E)  5.26 × 10-2 mol

Question 19

How many milliliters of 0.188 M   solution are needed to neutralize 50.00 mL of 0.0789 M NaOH?

Accepted Answer

A)  0.742 
B)  8.39 × 10-3 
C)  119 
D)  0.0477 
E)  21.0 
A)  0.742 
B)  8.39 × 10-3 
C)  119 
D)  0.0477 
E)  21.0

Question 20

What element is undergoing reduction (if any)in the following reaction?
Zn(s)+ 2 AgNO3(aq)→ Zn(NO3)2(aq)+ 2 Ag(s)

Accepted Answer

A)  Zn 
B)  N 
C)  O 
D)  Ag 
E)  This is not an oxidation-reduction reaction. 
A)  Zn 
B)  N 
C)  O 
D)  Ag 
E)  This is not an oxidation-reduction reaction.

Exam 9: Introduction to Solutions and Aqueous Reactions

The chemical formula for sulfurous acid is

How many grams of H2 gas can be produced by the reaction of 63.0 grams of Al(s)with an excess of dilute hydrochloric acid in the reaction shown below? 2 Al(s)+ 6 HCl(aq)→ 2 AlCl3(aq)+ 3 H2(g)

How many milliliters of a 0.266 M CsNO3 solution are required to make 150.0 mL of 0.075 M CsNO3 solution?

Give the net ionic equation for the reaction (if any)that occurs when aqueous solutions of H2SO4 and KOH are mixed.

An aqueous solution of H F is named

Determine the oxidation state of fluorine in F2.

What element is undergoing oxidation (if any)in the following reaction? Zn(s)+ 2 AgNO3(aq)→ Zn(NO3)2(aq)+ 2 Ag(s)

According to the balanced equation shown below,2.00 moles of oxalic acid,H2C2O4,reacts with ________ moles of permanganate,MnO4-. 5 H2C2O4(aq)+ 2 MnO4-(aq)+ 6 H+(aq)→ 10 CO2(g)+ Mn2+(aq)+ 8 H2O(l)

What element is undergoing oxidation (if any)in the following reaction? 2 HCl(aq)+ Ca(OH)2(aq)→ 2 H2O(l)+ 2 CaCl2(aq)

Which of the following compounds is insoluble in water?

Determine the oxidation state of nitrogen in NO2.

How many grams of NaCl are required to make 300.0 mL of a 2.500 M solution?

Which of the following is an oxidation-reduction reaction?

What is the concentration of FeCl3 in a solution prepared by dissolving 30.0 g of FeCl3 in enough water to make 275 mL of solution?

Identify the oxidation state of Cr in Cr F3(s). 2 Cr(s)+ 6 H F(g)→ 2 Cr F3(s)+3 H2(g)

List the spectator ions in the following reaction. Ba+2(aq)+ 2 OH-(aq)+ 2 Na +(aq)+ CO3 -2(aq)→ 2 Na +(aq)+ 2 OH-(aq)+ BaCO3(s)

What reagent could NOT be used to separate I- from OH - when added to an aqueous solution containing both?

How many moles of CH3CH2Cl are contained in 548 mL of 0.0788 M CH3CH2Cl solution?

How many milliliters of 0.188 M solution are needed to neutralize 50.00 mL of 0.0789 M NaOH?

What element is undergoing reduction (if any)in the following reaction? Zn(s)+ 2 AgNO3(aq)→ Zn(NO3)2(aq)+ 2 Ag(s)

Essentials: Units, Measurements, and Problem Solving

Atoms

The Quantum Mechanical Model of the Atom

Periodic Properties of the Elements

Molecules and Compounds

Chemical Bonding I

Chemical Bonding Ii

Chemical Reactions and Chemical Quantities

Thermochemistry

Gases

Liquids, Solids, and Intermolecular Forces

Crystalline Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Transition Metals and Coordination Compounds

Filters

How many grams of H₂ gas can be produced by the reaction of 63.0 grams of Al(s)with an excess of dilute hydrochloric acid in the reaction shown below? 2 Al(s)+ 6 HCl(aq)→ 2 AlCl₃(aq)+ 3 H₂(g)

How many milliliters of a 0.266 M CsNO₃ solution are required to make 150.0 mL of 0.075 M CsNO₃ solution?

Give the net ionic equation for the reaction (if any)that occurs when aqueous solutions of H₂SO₄ and KOH are mixed.

An aqueous solution of HF is named

Determine the oxidation state of fluorine in F₂.

What element is undergoing oxidation (if any)in the following reaction? Zn(s)+ 2 AgNO₃(aq)→ Zn(NO₃)₂(aq)+ 2 Ag(s)

According to the balanced equation shown below,2.00 moles of oxalic acid,H₂C₂O₄,reacts with ________ moles of permanganate,MnO₄^-. 5 H₂C₂O₄(aq)+ 2 MnO₄^-(aq)+ 6 H⁺(aq)→ 10 CO₂(g)+ Mn²⁺(aq)+ 8 H₂O(l)

What element is undergoing oxidation (if any)in the following reaction? 2 HCl(aq)+ Ca(OH)₂(aq)→ 2 H₂O(l)+ 2 CaCl₂(aq)

Determine the oxidation state of nitrogen in NO₂.

What is the concentration of FeCl₃ in a solution prepared by dissolving 30.0 g of FeCl₃ in enough water to make 275 mL of solution?

Identify the oxidation state of Cr in Cr F₃(s). 2 Cr(s)+ 6 H F(g)→ 2 Cr F₃(s)+3 H₂(g)

List the spectator ions in the following reaction. Ba⁺²(aq)+ 2 OH^-(aq)+ 2 Na ⁺(aq)+ CO₃ ^-2(aq)→ 2 Na ⁺(aq)+ 2 OH^-(aq)+ BaCO₃(s)

What reagent could NOT be used to separate I^- from OH^- when added to an aqueous solution containing both?

How many moles of CH₃CH₂Cl are contained in 548 mL of 0.0788 M CH₃CH₂Cl solution?

What element is undergoing reduction (if any)in the following reaction? Zn(s)+ 2 AgNO₃(aq)→ Zn(NO₃)₂(aq)+ 2 Ag(s)