Question 1

Write a balanced molecular equation for the reaction that occurs when aqueous solutions of potassium iodide and lead(II)nitrate are combined.

Accepted Answer

2KI(aq)+ P...

Question 2

Which of the following compounds is a strong electrolyte?

Accepted Answer

A)  H2O
B)  N2
C)  CH3COOH (acetic acid) 
D)  CH3CH2OH (ethanol) 
E)  KOHF) A) and D)
G) A) and C)

Question 3

The following experiments were carried out and observations recorded.
Expt.#1: copper metal was added to an aqueous solution of silver nitrate
Observation: The copper become coated with a substance.
Expt.#2: lead metal was added to an aqueous solution of copper(II)nitrate
Observation: The lead turned black and crumbled.
Expt.#3: zinc metal was added to an aqueous solution of lead(II)nitrate
Observation: The zinc appeared to fall apart.
Rank the metals from most active to least active.

Accepted Answer

most active Zn, next...

Question 4

Write balanced molecular and net ionic equations for the reaction that would occur between Al(s)and Co(NO3)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: 2Al(s)+ 3C...

Question 5

Calcium sulfate dihydrate (commonly known as gypsum) dissolves in cold water to the extent of 0.241 g per 100.cm3. What is the concentration of calcium ions in this solution?

Accepted Answer

A)  1.77*10-2 M
B)  2.80*10-2 M
C)  1.77*10-3 M
D)  3.54*10-2 M
E)  1,40*10-2 MF) A) and D)
G) B) and E)

Question 6

What is the correct formula of the salt formed in the neutralization reaction of hydrochloric acid with calcium hydroxide?

Accepted Answer

A)  CaO
B)  CaCl2
C)  CaH2
D)  CaCl
E)  CaClHF) B) and C)
G) A) and E) B

Question 7

A 250.mL sample of 0.0328M HCl is partially neutralized by the addition of 100.mL of 0.0245M NaOH. Find the concentration of hydrochloric acid in the resulting solution.

Accepted Answer

A)  0.00700 M
B)  0.0164 M
C)  0.0383 M
D)  0.0230 M
E)  0.0575 MF) None of the above
G) A) and E)

Question 8

Identify the elements that are oxidized and reduced in the following reaction. KClO3(aq) + 6HBr(aq)  →\rarr→  KCl(aq) + 3Br2(l) + 3H2O(l)

Accepted Answer

A)  Br is oxidized and Cl is reduced
B)  Cl is oxidized and H is reduced
C)  H is oxidized and O is reduced
D)  O is oxidized and Cl is reduced
E)  Cl is oxidized and Br is reduced F) None of the above
G) A) and B)

Question 9

When solid iron(II) hydroxide is added to water, the resulting solution contains 1.4*10-3g of dissolved iron(II) hydroxide per liter of solution. What is the hydroxide ion concentration in this solution?

Accepted Answer

A)  7.8*10-6 M
B)  1.6*10-5 M
C)  2.5*10-10 M
D)  3.1*10-5 M
E)  4.0*10-3 MF) C) and D)
G) A) and E)

Question 10

What is the chemical formula of the salt produced by the neutralization of potassium hydroxide with sulfuric acid?

Accepted Answer

A)  KSO3
B)  K2(SO4) 3
C)  K2SO4
D)  K(SO4) 2
E)  KSO4F) None of the above
G) All of the above

Question 11

Write the net ionic equation for the following reaction.Aqueous iron(III)sulfate is added to aqueous sodium sulfide to produce solid iron(III)sulfide and aqueous sodium sulfate.

Accepted Answer

2Fe³⁺(aq)+ 3...

Question 12

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

Accepted Answer

A) True 
 B)False

Question 13

Identify the element being oxidized in the following reaction.
4Al + 3O2 $\rarr$2Al2O3

Accepted Answer

Question 14

Batteries in our cars generate electricity by the following chemical reaction.
Pb + PbO2 + 2H2SO4 $\rarr$ 2PbSO4 + 2H2O
Which substance is reduced in this process?

Accepted Answer

Question 15

A 20.00 mL sample of 0.1015 M nitric acid is introduced into a flask, and water is added until the volume of the solution reaches 250.mL. What is the concentration of nitric acid in the final solution?

Accepted Answer

A)  1.27 M
B)  8.12 * 10-3 M
C)  0.406 M
D)  3.25 * 10-2 M
E)  5.08 * 10-4 MF) B) and E)
G) None of the above

Question 16

Define solution, solute, and solvent.

Accepted Answer

A solution is a homogeneous mi...

Question 17

The oxidation number of N in N2H4 is

Accepted Answer

A)  +4
B)  -4
C)  +2
D)  -2
E)  0F) A) and D)
G) C) and E) D

Question 18

The following equation is an example of a net ionic equation.
Na+(aq)+ Br-(aq)+ Ag+(aq)+ NO3-(aq)$\rarr$ AgBr(s)+ Na+(aq)+ NO3-(aq)

Accepted Answer

A) True 
 B)False  False

Question 19

The highest possible oxidation number of carbon is

Accepted Answer

A)  +8
B)  +6
C)  +4
D)  +2
E)  -4F) All of the above
G) B) and C)

Question 20

Write balanced molecular and net ionic equations for the reaction that would occur between CaCl2(aq)and Na2CO3(aq).Be sure to include the correct states in your final equations.If no reaction is expected, write "no reaction."

Accepted Answer

Molecular equation: CaCl₂(aq)+ ...

Exam 4: Reactions in Aqueous Solution

Write a balanced molecular equation for the reaction that occurs when aqueous solutions of potassium iodide and lead(II)nitrate are combined.

Correct Answer
verified
2KI(aq)+ P...
View Answer

Which of the following compounds is a strong electrolyte?

Correct Answer
verified

Correct Answer
verified
most active Zn, next...
View Answer

Write balanced molecular and net ionic equations for the reaction that would occur between Al(s)and Co(NO₃)₂(aq).Be sure to include the correct states in your final equations.If no reaction is expected, write "no reaction."

Correct Answer
verified
Molecular equation: 2Al(s)+ 3C...
View Answer

Calcium sulfate dihydrate (commonly known as gypsum) dissolves in cold water to the extent of 0.241 g per 100.cm³. What is the concentration of calcium ions in this solution?

Correct Answer
verified

What is the correct formula of the salt formed in the neutralization reaction of hydrochloric acid with calcium hydroxide?

Correct Answer
verified
B

A 250.mL sample of 0.0328M HCl is partially neutralized by the addition of 100.mL of 0.0245M NaOH. Find the concentration of hydrochloric acid in the resulting solution.

Correct Answer
verified

Identify the elements that are oxidized and reduced in the following reaction. KClO₃(aq) + 6HBr(aq) $\rarr$ KCl(aq) + 3Br₂(l) + 3H₂O(l)

Correct Answer
verified

When solid iron(II) hydroxide is added to water, the resulting solution contains 1.4*10^-3g of dissolved iron(II) hydroxide per liter of solution. What is the hydroxide ion concentration in this solution?

Correct Answer
verified

What is the chemical formula of the salt produced by the neutralization of potassium hydroxide with sulfuric acid?

Correct Answer
verified

Write the net ionic equation for the following reaction.Aqueous iron(III)sulfate is added to aqueous sodium sulfide to produce solid iron(III)sulfide and aqueous sodium sulfate.

Correct Answer
verified
2Fe³⁺(aq)+ 3...
View Answer

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

Correct Answer
verified

Identify the element being oxidized in the following reaction. 4Al + 3O₂ $\rarr$ 2Al₂O₃

Correct Answer
verified

Batteries in our cars generate electricity by the following chemical reaction. Pb + PbO₂ + 2H₂SO₄ $\rarr$ 2PbSO₄ + 2H₂O Which substance is reduced in this process?

Correct Answer
verified

A 20.00 mL sample of 0.1015 M nitric acid is introduced into a flask, and water is added until the volume of the solution reaches 250.mL. What is the concentration of nitric acid in the final solution?

Correct Answer
verified

Define solution, solute, and solvent.

Correct Answer
verified
A solution is a homogeneous mi...
View Answer

The oxidation number of N in N₂H₄ is

Correct Answer
verified
D

The following equation is an example of a net ionic equation. Na⁺(aq)+ Br^-(aq)+ Ag⁺(aq)+ NO₃^-(aq) $\rarr$ AgBr(s)+ Na⁺(aq)+ NO₃^-(aq)

Correct Answer
verified
False

The highest possible oxidation number of carbon is

Correct Answer
verified

Write balanced molecular and net ionic equations for the reaction that would occur between CaCl₂(aq)and Na₂CO₃(aq).Be sure to include the correct states in your final equations.If no reaction is expected, write "no reaction."

Correct Answer
verified
Molecular equation: CaCl₂(aq)+ ...
View Answer

Exam 4: Reactions in Aqueous Solution

Write a balanced molecular equation for the reaction that occurs when aqueous solutions of potassium iodide and lead(II)nitrate are combined.

Correct Answerverified2KI(aq)+ P...View AnswerShow Answer

Which of the following compounds is a strong electrolyte?

Correct AnswerverifiedShow Answer

Correct Answerverifiedmost active Zn, next...View AnswerShow Answer

Write balanced molecular and net ionic equations for the reaction that would occur between Al(s)and Co(NO3)2(aq).Be sure to include the correct states in your final equations.If no reaction is expected, write "no reaction."

Correct AnswerverifiedMolecular equation: 2Al(s)+ 3C...View AnswerShow Answer

Calcium sulfate dihydrate (commonly known as gypsum) dissolves in cold water to the extent of 0.241 g per 100.cm3. What is the concentration of calcium ions in this solution?

Correct AnswerverifiedShow Answer

What is the correct formula of the salt formed in the neutralization reaction of hydrochloric acid with calcium hydroxide?

Correct AnswerverifiedB

A 250.mL sample of 0.0328M HCl is partially neutralized by the addition of 100.mL of 0.0245M NaOH. Find the concentration of hydrochloric acid in the resulting solution.

Correct AnswerverifiedShow Answer

Identify the elements that are oxidized and reduced in the following reaction. KClO3(aq) + 6HBr(aq) →\rarr→ KCl(aq) + 3Br2(l) + 3H2O(l)

Correct AnswerverifiedShow Answer

When solid iron(II) hydroxide is added to water, the resulting solution contains 1.4*10-3g of dissolved iron(II) hydroxide per liter of solution. What is the hydroxide ion concentration in this solution?

Correct AnswerverifiedShow Answer

What is the chemical formula of the salt produced by the neutralization of potassium hydroxide with sulfuric acid?

Correct AnswerverifiedShow Answer

Write the net ionic equation for the following reaction.Aqueous iron(III)sulfate is added to aqueous sodium sulfide to produce solid iron(III)sulfide and aqueous sodium sulfate.

Correct Answerverified2Fe3+(aq)+ 3...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

Identify the element being oxidized in the following reaction. 4Al + 3O2 →\rarr→ 2Al2O3

Correct AnswerverifiedShow Answer

Batteries in our cars generate electricity by the following chemical reaction. Pb + PbO2 + 2H2SO4 →\rarr→ 2PbSO4 + 2H2O Which substance is reduced in this process?

Correct AnswerverifiedShow Answer

A 20.00 mL sample of 0.1015 M nitric acid is introduced into a flask, and water is added until the volume of the solution reaches 250.mL. What is the concentration of nitric acid in the final solution?

Correct AnswerverifiedShow Answer

Define solution, solute, and solvent.

Correct AnswerverifiedA solution is a homogeneous mi...View AnswerShow Answer

The oxidation number of N in N2H4 is

Correct AnswerverifiedD

The following equation is an example of a net ionic equation. Na+(aq)+ Br-(aq)+ Ag+(aq)+ NO3-(aq) →\rarr→ AgBr(s)+ Na+(aq)+ NO3-(aq)

Correct AnswerverifiedFalse

The highest possible oxidation number of carbon is

Correct AnswerverifiedShow Answer

Write balanced molecular and net ionic equations for the reaction that would occur between CaCl2(aq)and Na2CO3(aq).Be sure to include the correct states in your final equations.If no reaction is expected, write "no reaction."

Correct AnswerverifiedMolecular equation: CaCl2(aq)+ ...View AnswerShow Answer

Correct Answer
verified
2KI(aq)+ P...
View Answer

Correct Answer
verified

Correct Answer
verified
most active Zn, next...
View Answer

Write balanced molecular and net ionic equations for the reaction that would occur between Al(s)and Co(NO₃)₂(aq).Be sure to include the correct states in your final equations.If no reaction is expected, write "no reaction."

Correct Answer
verified
Molecular equation: 2Al(s)+ 3C...
View Answer

Calcium sulfate dihydrate (commonly known as gypsum) dissolves in cold water to the extent of 0.241 g per 100.cm³. What is the concentration of calcium ions in this solution?

Correct Answer
verified

Correct Answer
verified
B

Correct Answer
verified

Identify the elements that are oxidized and reduced in the following reaction. KClO₃(aq) + 6HBr(aq) $\rarr$ KCl(aq) + 3Br₂(l) + 3H₂O(l)

Correct Answer
verified

When solid iron(II) hydroxide is added to water, the resulting solution contains 1.4*10^-3g of dissolved iron(II) hydroxide per liter of solution. What is the hydroxide ion concentration in this solution?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
2Fe³⁺(aq)+ 3...
View Answer

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

Correct Answer
verified

Identify the element being oxidized in the following reaction. 4Al + 3O₂ $\rarr$ 2Al₂O₃

Correct Answer
verified

Batteries in our cars generate electricity by the following chemical reaction. Pb + PbO₂ + 2H₂SO₄ $\rarr$ 2PbSO₄ + 2H₂O Which substance is reduced in this process?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A solution is a homogeneous mi...
View Answer

The oxidation number of N in N₂H₄ is

Correct Answer
verified
D

The following equation is an example of a net ionic equation. Na⁺(aq)+ Br^-(aq)+ Ag⁺(aq)+ NO₃^-(aq) $\rarr$ AgBr(s)+ Na⁺(aq)+ NO₃^-(aq)

Correct Answer
verified
False

Correct Answer
verified

Write balanced molecular and net ionic equations for the reaction that would occur between CaCl₂(aq)and Na₂CO₃(aq).Be sure to include the correct states in your final equations.If no reaction is expected, write "no reaction."

Correct Answer
verified
Molecular equation: CaCl₂(aq)+ ...
View Answer