Question 1

Match the following.
-CH4(g)+ 2 O2(g)→ CO2(g)+ 2 H2O(g)

Accepted Answer

A) combustion 
B) acid base 
C) oxidation reduction 
D) gas evolution 
E) precipitation 
A) combustion 
B) acid base 
C) oxidation reduction 
D) gas evolution 
E) precipitation

Question 2

How many grams of CaCl2 are formed when 15.00 mL of 0.00237 M Ca(OH)2 reacts with excess Cl2 gas?
2 Ca(OH)2(aq)+ 2 Cl2(g)→ Ca(OCl)2(aq)+ CaCl2(s)+ 2 H2O(l)

Accepted Answer

A) 0.00197 g 
B) 0.00394 g 
C) 0.00789 g 
D) 0.0507 g 
A) 0.00197 g 
B) 0.00394 g 
C) 0.00789 g 
D) 0.0507 g

Question 3

Choose the statement below that is true.

Accepted Answer

A) A weak acid solution consists of mostly nonionized acid molecules. 
B) The term "strong electrolyte" means that the substance is extremely reactive. 
C) A strong acid solution consists of only partially ionized acid molecules. 
D) The term "weak electrolyte" means that the substance is inert. 
E) A molecular compound that does not ionize in solution is considered a strong electrolyte. 
A) A weak acid solution consists of mostly nonionized acid molecules. 
B) The term "strong electrolyte" means that the substance is extremely reactive. 
C) A strong acid solution consists of only partially ionized acid molecules. 
D) The term "weak electrolyte" means that the substance is inert. 
E) A molecular compound that does not ionize in solution is considered a strong electrolyte.

Question 4

If 100.mL of 0.400 M Na2SO4 is added to 200.mL of 0.600 M NaCl,what is the concentration of Na+ ions in the final solution? Assume that the volumes are additive.

Accepted Answer

A) 0.534 M 
B) 0.667 M 
C) 1.00 M 
D) 1.40 M 
A) 0.534 M 
B) 0.667 M 
C) 1.00 M 
D) 1.40 M

Question 5

Which one of the following compounds behaves as an acid when dissolved in water?

Accepted Answer

A) RaO 
B) C4H10 
C) HI 
D) RbOH 
A) RaO 
B) C4H10 
C) HI 
D) RbOH

Question 6

How many grams of Li3N can be formed from 1.75 moles of Li? Assume an excess of nitrogen.
6 Li(s)+ N2(g)→ 2 Li3N(s)

Accepted Answer

A) 18.3 g Li3N 
B) 20.3 g Li3N 
C) 58.3 g Li3N 
D) 61.0 g Li3N 
E) 15.1 g Li3N 
A) 18.3 g Li3N 
B) 20.3 g Li3N 
C) 58.3 g Li3N 
D) 61.0 g Li3N 
E) 15.1 g Li3N

Question 7

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 8

Describe the difference between complete ionic and net ionic equations.

Accepted Answer

A complete ionic equation shows all of t

Question 9

According to the following balanced reaction,how many moles of NO are formed from 8.44 moles of NO2 if there is plenty of water present?
3 NO2(g)+ H2O(l)→ 2 HNO3(aq)+ NO(g)

Accepted Answer

A) 2.81 moles NO 
B) 25.3 moles NO 
C) 8.44 moles NO 
D) 5.50 moles NO 
E) 1.83 moles NO 
A) 2.81 moles NO 
B) 25.3 moles NO 
C) 8.44 moles NO 
D) 5.50 moles NO 
E) 1.83 moles NO

Question 10

Magnesium burns in air with a dazzling brilliance to produce magnesium oxide:
2Mg(s)+ O2(g)→ 2MgO(s)
How many moles of O2 are consumed when 0.770 mol of magnesium burns in excess oxygen?

Accepted Answer

A) 0.0317 
B) 2.60 
C) 0.770 
D) 1.54 
E) 0.385 
A) 0.0317 
B) 2.60 
C) 0.770 
D) 1.54 
E) 0.385

Question 11

Which statement is correct for the following redox reaction?
5 Fe2+ + MnO4- +8H+  → 5 Fe3+ +Mn2+ + 4H2O

Accepted Answer

A) Fe2+ is reduced. 
B) MnO4- is oxidized. 
C) Fe2+ is the oxidizing agent. 
D) MnO4- is the oxidizing agent. 
A) Fe2+ is reduced. 
B) MnO4- is oxidized. 
C) Fe2+ is the oxidizing agent. 
D) MnO4- is the oxidizing agent.

Question 12

What is the concentration of nitrate ions in a 0.125 M Mg(NO3)2 solution?

Accepted Answer

A) 0.125 M 
B) 0.0625 M 
C) 0.375 M 
D) 0.250 M 
E) 0.160 M 
A) 0.125 M 
B) 0.0625 M 
C) 0.375 M 
D) 0.250 M 
E) 0.160 M

Question 13

How many grams of AgNO3 are needed to make 250.mL of a solution that is 0.135 M?

Accepted Answer

A) 0.0917 g 
B) 0.174 g 
C) 5.73 g 
D) 91.7 g 
A) 0.0917 g 
B) 0.174 g 
C) 5.73 g 
D) 91.7 g

Question 14

Determine the oxidation state of Sn in Sn(SO4)2.

Accepted Answer

A) +2 
B) +4 
C) +6 
D) 0 
E) -2 
A) +2 
B) +4 
C) +6 
D) 0 
E) -2

Question 15

Nitrogen dioxide reacts with water to form nitric acid and nitrogen monoxide according to the equation:
3 NO2(g)+ H2O(l)→ HNO3(l)+ NO(g)
Suppose that 4mol NO2 and 2 H2O mol combine and react completely.How many
Moles of the reactant in excess are present after the reaction has completed?

Accepted Answer

A) 0.7 
B) 1 
C) 0 
D) 3 
A) 0.7 
B) 1 
C) 0 
D) 3

Question 16

How many milliliters of a 0.266 M LiNO3 solution are required to make 150.0 mL of 0.075 M LiNO3 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 17

Determine the reducing agent in the following reaction.
2 Li(s)+ Fe(C2H3O2)2(aq)→ 2 LiC2H3O2(aq)+ Fe(s)

Accepted Answer

A) O 
B) H 
C) C 
D) Fe 
E) Li 
A) O 
B) H 
C) C 
D) Fe 
E) Li

Question 18

How many of the following compounds are soluble in water?
Cu(OH)2 LiNO3 NH4Br K2S

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 3 
E) 4 
A) 0 
B) 1 
C) 2 
D) 3 
E) 4

Question 19

How many grams of CH3OH must be added to water to prepare 150mL of a solution that is 2.0 M CH3OH?

Accepted Answer

Question 20

What is the concentration of NO3- ions in a solution prepared by dissolving 25.0 g of Ca(NO3)2 in enough water to produce 300.mL of solution?

Accepted Answer

A) 0.254 M 
B) 0.508 M 
C) 0.672 M 
D) 1.02 M 
A) 0.254 M 
B) 0.508 M 
C) 0.672 M 
D) 1.02 M

Match the following. -CH₄(g)+ 2 O₂(g)→ CO₂(g)+ 2 H₂O(g)

How many grams of CaCl₂ are formed when 15.00 mL of 0.00237 M Ca(OH)₂ reacts with excess Cl₂ gas? 2 Ca(OH)₂(aq)+ 2 Cl₂(g)→ Ca(OCl)₂(aq)+ CaCl₂(s)+ 2 H₂O(l)

Choose the statement below that is true.

If 100.mL of 0.400 M Na₂SO₄ is added to 200.mL of 0.600 M NaCl,what is the concentration of Na⁺ ions in the final solution? Assume that the volumes are additive.

Which one of the following compounds behaves as an acid when dissolved in water?

How many grams of Li₃N can be formed from 1.75 moles of Li? Assume an excess of nitrogen. 6 Li(s)+ N₂(g)→ 2 Li₃N(s)

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

Describe the difference between complete ionic and net ionic equations.

According to the following balanced reaction,how many moles of NO are formed from 8.44 moles of NO₂if there is plenty of water present? 3 NO₂(g)+ H₂O(l)→ 2 HNO₃(aq)+ NO(g)

Magnesium burns in air with a dazzling brilliance to produce magnesium oxide: 2Mg(s)+ O₂(g)→ 2MgO(s) How many moles of O₂ are consumed when 0.770 mol of magnesium burns in excess oxygen?

Which statement is correct for the following redox reaction? 5 Fe²⁺ + MnO₄^-+8H⁺ → 5 Fe³⁺+Mn²⁺+ 4H₂O

What is the concentration of nitrate ions in a 0.125 M Mg(NO₃)₂ solution?

How many grams of AgNO₃ are needed to make 250.mL of a solution that is 0.135 M?

Determine the oxidation state of Sn in Sn(SO₄)₂.

Nitrogen dioxide reacts with water to form nitric acid and nitrogen monoxide according to the equation: 3 NO₂(g)+ H₂O(l)→ HNO₃(l)+ NO(g) Suppose that 4mol NO₂ and 2 H₂O mol combine and react completely.How many Moles of the reactant in excess are present after the reaction has completed?

How many milliliters of a 0.266 M LiNO₃ solution are required to make 150.0 mL of 0.075 M LiNO₃ solution?

Determine the reducing agent in the following reaction. 2 Li(s)+ Fe(C₂H₃O₂)₂(aq)→ 2 LiC₂H₃O₂(aq)+ Fe(s)

How many of the following compounds are soluble in water? Cu(OH)₂ LiNO₃ NH₄Br K₂S

How many grams of CH₃OH must be added to water to prepare 150mL of a solution that is 2.0 M CH₃OH?

What is the concentration of NO₃^- ions in a solution prepared by dissolving 25.0 g of Ca(NO₃)₂ in enough water to produce 300.mL of solution?

Matter, Measurement, and Problem Solving

Atoms and Elements

Molecules, Compounds and Chemical Equations

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding II: Molecular Shapes, Valence Bond Theory, and

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Filters

Exam 4: Chemical Quantities and Aqueous Reactions

Match the following. -CH4(g)+ 2 O2(g)→ CO2(g)+ 2 H2O(g)

How many grams of CaCl2 are formed when 15.00 mL of 0.00237 M Ca(OH)2 reacts with excess Cl2 gas? 2 Ca(OH)2(aq)+ 2 Cl2(g)→ Ca(OCl)2(aq)+ CaCl2(s)+ 2 H2O(l)

Choose the statement below that is true.

If 100.mL of 0.400 M Na2SO4 is added to 200.mL of 0.600 M NaCl,what is the concentration of Na+ ions in the final solution? Assume that the volumes are additive.

Which one of the following compounds behaves as an acid when dissolved in water?

How many grams of Li3N can be formed from 1.75 moles of Li? Assume an excess of nitrogen. 6 Li(s)+ N2(g)→ 2 Li3N(s)

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

Describe the difference between complete ionic and net ionic equations.

According to the following balanced reaction,how many moles of NO are formed from 8.44 moles of NO2 if there is plenty of water present? 3 NO2(g)+ H2O(l)→ 2 HNO3(aq)+ NO(g)

Magnesium burns in air with a dazzling brilliance to produce magnesium oxide: 2Mg(s)+ O2(g)→ 2MgO(s) How many moles of O2 are consumed when 0.770 mol of magnesium burns in excess oxygen?

Which statement is correct for the following redox reaction? 5 Fe2+ + MnO4- +8H+ → 5 Fe3+ +Mn2+ + 4H2O

What is the concentration of nitrate ions in a 0.125 M Mg(NO3)2 solution?

How many grams of AgNO3 are needed to make 250.mL of a solution that is 0.135 M?

Determine the oxidation state of Sn in Sn(SO4)2.

Nitrogen dioxide reacts with water to form nitric acid and nitrogen monoxide according to the equation: 3 NO2(g)+ H2O(l)→ HNO3(l)+ NO(g) Suppose that 4mol NO2 and 2 H2O mol combine and react completely.How many Moles of the reactant in excess are present after the reaction has completed?

How many milliliters of a 0.266 M LiNO3 solution are required to make 150.0 mL of 0.075 M LiNO3 solution?

Determine the reducing agent in the following reaction. 2 Li(s)+ Fe(C2H3O2)2(aq)→ 2 LiC2H3O2(aq)+ Fe(s)

How many of the following compounds are soluble in water? Cu(OH)2 LiNO3 NH4Br K2S

How many grams of CH3OH must be added to water to prepare 150mL of a solution that is 2.0 M CH3OH?

What is the concentration of NO3- ions in a solution prepared by dissolving 25.0 g of Ca(NO3)2 in enough water to produce 300.mL of solution?

Matter, Measurement, and Problem Solving

Atoms and Elements

Molecules, Compounds and Chemical Equations

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding II: Molecular Shapes, Valence Bond Theory, and

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Filters

Match the following. -CH₄(g)+ 2 O₂(g)→ CO₂(g)+ 2 H₂O(g)

How many grams of CaCl₂ are formed when 15.00 mL of 0.00237 M Ca(OH)₂ reacts with excess Cl₂ gas? 2 Ca(OH)₂(aq)+ 2 Cl₂(g)→ Ca(OCl)₂(aq)+ CaCl₂(s)+ 2 H₂O(l)

If 100.mL of 0.400 M Na₂SO₄ is added to 200.mL of 0.600 M NaCl,what is the concentration of Na⁺ ions in the final solution? Assume that the volumes are additive.

How many grams of Li₃N can be formed from 1.75 moles of Li? Assume an excess of nitrogen. 6 Li(s)+ N₂(g)→ 2 Li₃N(s)

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

According to the following balanced reaction,how many moles of NO are formed from 8.44 moles of NO₂if there is plenty of water present? 3 NO₂(g)+ H₂O(l)→ 2 HNO₃(aq)+ NO(g)

Magnesium burns in air with a dazzling brilliance to produce magnesium oxide: 2Mg(s)+ O₂(g)→ 2MgO(s) How many moles of O₂ are consumed when 0.770 mol of magnesium burns in excess oxygen?

Which statement is correct for the following redox reaction? 5 Fe²⁺ + MnO₄^-+8H⁺ → 5 Fe³⁺+Mn²⁺+ 4H₂O

What is the concentration of nitrate ions in a 0.125 M Mg(NO₃)₂ solution?

How many grams of AgNO₃ are needed to make 250.mL of a solution that is 0.135 M?

Determine the oxidation state of Sn in Sn(SO₄)₂.

How many milliliters of a 0.266 M LiNO₃ solution are required to make 150.0 mL of 0.075 M LiNO₃ solution?

Determine the reducing agent in the following reaction. 2 Li(s)+ Fe(C₂H₃O₂)₂(aq)→ 2 LiC₂H₃O₂(aq)+ Fe(s)

How many of the following compounds are soluble in water? Cu(OH)₂ LiNO₃ NH₄Br K₂S

How many grams of CH₃OH must be added to water to prepare 150mL of a solution that is 2.0 M CH₃OH?

What is the concentration of NO₃^- ions in a solution prepared by dissolving 25.0 g of Ca(NO₃)₂ in enough water to produce 300.mL of solution?