Question 1

Predict the products of the following single replacement reaction. 
Fe(s)+ CuSO4(aq)$\rarr$

Accepted Answer

A) Cu(s)+ FeSO4(aq) 
B) Fe(s)+ Cu(s)+ SO4(aq) 
C) CuS(s)+ Fe2SO4(aq) 
D) FeCuSO4(aq) 
E) FeO(s)+ CuSO3(aq) 
A) Cu(s)+ FeSO4(aq) 
B) Fe(s)+ Cu(s)+ SO4(aq) 
C) CuS(s)+ Fe2SO4(aq) 
D) FeCuSO4(aq) 
E) FeO(s)+ CuSO3(aq)

Question 2

Which of the following will occur when a solution of Pb(NO3)2(aq)is mixed with a solution of KI(aq)?

Accepted Answer

A) A precipitate of KNO3 will form; Pb2+ and I- are spectator ions. 
B) No precipitate will form. 
C) A precipitate of Pb(NO3)2 will form; K+ and I- are spectator ions. 
D) A precipitate of PbI2 will form; K+ and NO3- are spectator ions. 
E) A precipitate of PbI2 will form; Pb2+ and I- are spectator ions. 
A) A precipitate of KNO3 will form; Pb2+ and I- are spectator ions. 
B) No precipitate will form. 
C) A precipitate of Pb(NO3)2 will form; K+ and I- are spectator ions. 
D) A precipitate of PbI2 will form; K+ and NO3- are spectator ions. 
E) A precipitate of PbI2 will form; Pb2+ and I- are spectator ions.

Question 3

A piece of lead metal was added to an aqueous solution of copper(II)nitrate, and within a few minutes it was observed that the lead turned black and crumbled.The characteristic blue solution of copper (II)ions had faded..(NOTE: Lead forms a 2+ ion when it reacts.)Write the balanced chemical equation for this reaction.

Accepted Answer

Pb(s)+ Cu(

Question 4

The common constituent in all acid solutions is

Accepted Answer

A) H2 
B) H+ 
C) OH- 
D) H2SO4 
E) Cl- 
A) H2 
B) H+ 
C) OH- 
D) H2SO4 
E) Cl-

Question 5

Identify the major ionic species present in an aqueous solution of NH4ClO4.

Accepted Answer

A) NH4+, Cl-, 4O2- 
B) N3-, 4H+, Cl-, 4O2- 
C) 4NH+, 4ClO- 
D) NH4+, ClO4- 
E) NH4Cl+, O4- 
A) NH4+, Cl-, 4O2- 
B) N3-, 4H+, Cl-, 4O2- 
C) 4NH+, 4ClO- 
D) NH4+, ClO4- 
E) NH4Cl+, O4-

Question 6

Identify the correct net ionic equation for the reaction that occurs when solutions of HClO4 and Ba(OH)2 are mixed.

Accepted Answer

A) H+(aq)+ 2OH-(aq)$\rarr$H2O(l) 
B) H+(aq)+ OH-(aq)$\rarr$H2O(l) 
C) 2HClO4(aq)+ Ba(OH)2(s)$\rarr$2H2O(l)+ Ba(ClO4)2(aq) 
D) 2HClO4(aq)+ Ba(OH)2(s)$\rarr$2H2O(l)+ Ba(ClO4)2(s) 
E) 2H+(aq)+ Ba(OH)2(s)$\rarr$ 2H2O(l)+ Ba2+(aq) 
A) H+(aq)+ 2OH-(aq)$\rarr$H2O(l) 
B) H+(aq)+ OH-(aq)$\rarr$H2O(l) 
C) 2HClO4(aq)+ Ba(OH)2(s)$\rarr$2H2O(l)+ Ba(ClO4)2(aq) 
D) 2HClO4(aq)+ Ba(OH)2(s)$\rarr$2H2O(l)+ Ba(ClO4)2(s) 
E) 2H+(aq)+ Ba(OH)2(s)$\rarr$ 2H2O(l)+ Ba2+(aq)

Question 7

Identify the correct net ionic equation for the reaction that occurs when solutions of Pb(NO3)2 and NH4Cl are mixed.

Accepted Answer

A) Pb(NO3)2(aq)+ 2NH4Cl(aq)$\rarr$ NH4NO3(aq)+ PbCl2(s) 
B) Pb2+(aq)+ 2Cl-(aq)$\rarr$PbCl2(s) 
C) Pb2+(aq)+ 2NO3- (aq)+ 2NH   (aq)+ 2Cl-(aq)$\rarr$ 2NH   (aq)+ 2NO3- (aq)+ PbCl2(s) 
D) NH4+(aq)+ NO3- (aq)$\rarr$2NH4NO3(s) 
E) No reaction occurs when the solutions are mixed. 
A) Pb(NO3)2(aq)+ 2NH4Cl(aq)$\rarr$ NH4NO3(aq)+ PbCl2(s) 
B) Pb2+(aq)+ 2Cl-(aq)$\rarr$PbCl2(s) 
C) Pb2+(aq)+ 2NO3- (aq)+ 2NH   (aq)+ 2Cl-(aq)$\rarr$ 2NH   (aq)+ 2NO3- (aq)+ PbCl2(s) 
D) NH4+(aq)+ NO3- (aq)$\rarr$2NH4NO3(s) 
E) No reaction occurs when the solutions are mixed.

Question 8

The oxidation number of N in N2H4 is

Accepted Answer

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

Question 9

Identify the following compound as a strong electrolyte, weak electrolyte, or nonelectrolyte: NH4Cl.

Accepted Answer

Question 10

Which of the following compounds is a nonelectrolyte?

Accepted Answer

A) NaF 
B) HNO3 
C) CH3COOH (acetic acid) 
D) NaOH 
E) C6H12O6 (glucose) 
A) NaF 
B) HNO3 
C) CH3COOH (acetic acid) 
D) NaOH 
E) C6H12O6 (glucose)

Question 11

Write the balanced molecular and net ionic equations for the acid-base neutralization reaction between H3PO4(aq)and Ba(OH)2(aq).Be sure to include the correct states in your final equations.If no reaction is expected, write "no reaction."

Accepted Answer

Molecular equation: 2H₃PO₄(aq)+

Question 12

The solubility of Ba(NO3)2 is 130.5 grams per liter at 0°C.How many moles of dissolved salt are present in 4.0 liters of a saturated solution of Ba(NO3)2 at 0ºC?

Accepted Answer

Question 13

The oxidation number of Cr in Cr2O72- is

Accepted Answer

A) -12 
B) -7 
C) -2 
D) +6 
E) +7 
A) -12 
B) -7 
C) -2 
D) +6 
E) +7

Question 14

A 4.691 g sample of MgCl2 is dissolved in enough water to give 750.mL of solution.What is the magnesium ion concentration in this solution?

Accepted Answer

A) 3.70 × 10-2 M 
B) 1.05 × 10-2 M 
C) 6.57 × 10-2 M 
D) 4.93 × 10-2 M 
E) 0.131 M 
A) 3.70 × 10-2 M 
B) 1.05 × 10-2 M 
C) 6.57 × 10-2 M 
D) 4.93 × 10-2 M 
E) 0.131 M

Question 15

Which of the following is an example of a disproportionation reaction?

Accepted Answer

A) 2C2H6(g)+ 7O2(g)$\rarr$4CO2(g)+ 6H2O(l) 
B) 2KBr(aq)+ Cl2(g)$\rarr$2KCl(aq)+ Br2(l) 
C) 2H2O2(aq)$\rarr$ 2H2O(l)+ O2(g) 
D) CaBr2(aq)+ H2SO4(aq)$\rarr$ CaSO4(s)+ 2HBr(g) 
E) 2Al(s)+ 3H2SO4(aq)$\rarr$Al2(SO4)3(aq)+ 3H2(g) 
A) 2C2H6(g)+ 7O2(g)$\rarr$4CO2(g)+ 6H2O(l) 
B) 2KBr(aq)+ Cl2(g)$\rarr$2KCl(aq)+ Br2(l) 
C) 2H2O2(aq)$\rarr$ 2H2O(l)+ O2(g) 
D) CaBr2(aq)+ H2SO4(aq)$\rarr$ CaSO4(s)+ 2HBr(g) 
E) 2Al(s)+ 3H2SO4(aq)$\rarr$Al2(SO4)3(aq)+ 3H2(g)

Question 16

Based on the solubility rules, which of the following should be soluble in water?

Accepted Answer

A) (NH4)3PO4 
B) Ca3(PO4)2 
C) AlPO4 
D) Ag3PO4 
E) Mg3(PO4)2 
A) (NH4)3PO4 
B) Ca3(PO4)2 
C) AlPO4 
D) Ag3PO4 
E) Mg3(PO4)2

Question 17

Identify the major ionic species present in an aqueous solution of FeCl3.

Accepted Answer

A) Fe+, Cl3- 
B) Fe3+, Cl33- 
C) Fe3+, 3 Cl- 
D) Fe2+, 3 Cl- 
E) Fe+, 3 Cl- 
A) Fe+, Cl3- 
B) Fe3+, Cl33- 
C) Fe3+, 3 Cl- 
D) Fe2+, 3 Cl- 
E) Fe+, 3 Cl-

Question 18

A 350.mL sample of 0.276M HNO3 is partially neutralized by 125 mL of 0.0120M Ca(OH)2.Find the concentration of nitric acid in the resulting solution.

Accepted Answer

A) 0.210 M 
B) 0.00632 M 
C) 0.203 M 
D) 0.0240 M 
E) 0.197 M 
A) 0.210 M 
B) 0.00632 M 
C) 0.203 M 
D) 0.0240 M 
E) 0.197 M

Question 19

The following reaction is a redox reaction.
CaC2(s)+ H2O(l)$\rarr$ HCCH(g)+ CaO(s)

Accepted Answer

A) True 
 B)False

Question 20

A 350.mL solution of 0.150 M HNO3(aq)is mixed with a solution of 230.mL of 0.240 M HCl(aq).How many moles of H+(aq)are present in the final solution?

Accepted Answer

A) 0.0525 moles H+ 
B) 0.108 moles H+ 
C) 0.186 moles H+ 
D) 0.0539 moles H+ 
E) 0.195 moles H+ 
A) 0.0525 moles H+ 
B) 0.108 moles H+ 
C) 0.186 moles H+ 
D) 0.0539 moles H+ 
E) 0.195 moles H+

Exam 4: Reactions in Aqueous Solutions

Predict the products of the following single replacement reaction. Fe(s)+ CuSO4(aq) →\rarr→

Which of the following will occur when a solution of Pb(NO3)2(aq)is mixed with a solution of KI(aq)?

The common constituent in all acid solutions is

Identify the major ionic species present in an aqueous solution of NH4ClO4.

Identify the correct net ionic equation for the reaction that occurs when solutions of HClO4 and Ba(OH)2 are mixed.

Identify the correct net ionic equation for the reaction that occurs when solutions of Pb(NO3)2 and NH4Cl are mixed.

The oxidation number of N in N2H4 is

Identify the following compound as a strong electrolyte, weak electrolyte, or nonelectrolyte: NH4Cl.

Which of the following compounds is a nonelectrolyte?

Write the balanced molecular and net ionic equations for the acid-base neutralization reaction between H3PO4(aq)and Ba(OH)2(aq).Be sure to include the correct states in your final equations.If no reaction is expected, write "no reaction."

The solubility of Ba(NO3)2 is 130.5 grams per liter at 0°C.How many moles of dissolved salt are present in 4.0 liters of a saturated solution of Ba(NO3)2 at 0ºC?

The oxidation number of Cr in Cr2O72- is

A 4.691 g sample of MgCl2 is dissolved in enough water to give 750.mL of solution.What is the magnesium ion concentration in this solution?

Which of the following is an example of a disproportionation reaction?

Based on the solubility rules, which of the following should be soluble in water?

Identify the major ionic species present in an aqueous solution of FeCl3.

A 350.mL sample of 0.276M HNO3 is partially neutralized by 125 mL of 0.0120M Ca(OH)2.Find the concentration of nitric acid in the resulting solution.

The following reaction is a redox reaction. CaC2(s)+ H2O(l) →\rarr→ HCCH(g)+ CaO(s)

A 350.mL solution of 0.150 M HNO3(aq)is mixed with a solution of 230.mL of 0.240 M HCl(aq).How many moles of H+(aq)are present in the final solution?

Chemistry: the Study of Change

Atoms, Molecules, and Ions

Mass Relationships in Chemical Reactions

Gases

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry in the Atmosphere

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metal Chemistry and Coordination Compounds

Organic Chemistry

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Filters

Predict the products of the following single replacement reaction. Fe(s)+ CuSO₄(aq) $\rarr$

Which of the following will occur when a solution of Pb(NO₃)₂(aq)is mixed with a solution of KI(aq)?

Identify the major ionic species present in an aqueous solution of NH₄ClO₄.

Identify the correct net ionic equation for the reaction that occurs when solutions of HClO₄ and Ba(OH)₂ are mixed.

Identify the correct net ionic equation for the reaction that occurs when solutions of Pb(NO₃)₂ and NH₄Cl are mixed.

The oxidation number of N in N₂H₄ is

Identify the following compound as a strong electrolyte, weak electrolyte, or nonelectrolyte: NH₄Cl.

Write the balanced molecular and net ionic equations for the acid-base neutralization reaction between H₃PO₄(aq)and Ba(OH)₂(aq).Be sure to include the correct states in your final equations.If no reaction is expected, write "no reaction."

The solubility of Ba(NO₃)₂ is 130.5 grams per liter at 0°C.How many moles of dissolved salt are present in 4.0 liters of a saturated solution of Ba(NO₃)₂ at 0ºC?

The oxidation number of Cr in Cr₂O₇^2- is

A 4.691 g sample of MgCl₂ is dissolved in enough water to give 750.mL of solution.What is the magnesium ion concentration in this solution?

Identify the major ionic species present in an aqueous solution of FeCl₃.

A 350.mL sample of 0.276M HNO₃ is partially neutralized by 125 mL of 0.0120M Ca(OH)₂.Find the concentration of nitric acid in the resulting solution.

The following reaction is a redox reaction. CaC₂(s)+ H₂O(l) $\rarr$ HCCH(g)+ CaO(s)

A 350.mL solution of 0.150 M HNO₃(aq)is mixed with a solution of 230.mL of 0.240 M HCl(aq).How many moles of H⁺(aq)are present in the final solution?