Question 1

In the following reaction,what ions,if any,are spectator ions?
Pb(NO3) 2(aq) + 2NaCl(aq)   →	o→  PbCl2(s) + 2NaNO3(aq)

Accepted Answer

A)  Pb2+(aq) ,Cl-(aq) 
B)  Na+(aq) ,NO3-(aq) 
C)  Pb2+(aq) ,NO3-(aq) 
D)  Na+(aq) ,Cl-(aq) 
E)  There are no spectator ions. F) A) and E)
G) A) and C)

Question 2

Which of the following solutions will be the poorest conductor of electrical current?

Accepted Answer

A)  sucrose,C12H22O11(aq) 
B)  sodium chloride,NaCl(aq) 
C)  potassium nitrate,KNO3(aq) 
D)  lithium hydroxide,LiOH(aq) 
E)  sulfuric acid,H2SO4(aq) F) All of the above
G) None of the above

Question 3

A 0.1873 g sample of a pure,solid acid,H2X was dissolved in water and titrated with 0.1052 M NaOH solution.The balanced equation for the neutralization reaction occurring is
H2X(aq)+ 2NaOH(aq) $\to$ Na2X(aq)+ 2H2O(l)
If the molar mass of H2X is 85.00 g/mol,calculate the volume of NaOH solution needed in the titration.

Accepted Answer

The answer of A 0.1873 g sample of a pure,solid...

Question 4

a.Define "oxidation".
b.Identify the oxidizing and reducing agents in the following (unbalanced)equation.
HNO3(aq)+ C2H6O(aq)+ K2Cr2O7(aq) $\to$KNO3(aq)+ C2H4O(aq)+ H2O(l)+ Cr(NO3)3(aq)

Accepted Answer

a.Oxidation: loss of electrons...

Question 5

Predict the product(s) for the following reaction.
Cl2O7(g) + H2O(l)   →	o→

Accepted Answer

A)  HClO4(aq) 
B)  H2ClO4(aq) 
C)  H(ClO4) 2 (aq) 
D)  HCl(aq) + O2(g) 
E)  HclO3(aq)  F) C) and D)
G) B) and E)

Question 6

Select the classification for the following reaction.
Fe(s) + 2Fe3+(aq)   →	o→  3Fe2+(aq)

Accepted Answer

A)  precipitation
B)  acid-base
C)  redox
D)  decomposition
E)  None of these choices is correct. F) C) and D)
G) B) and D)

Question 7

Select the precipitate that forms when the following reactants are mixed.
Mg(CH3COO) 2(aq) + LiOH(aq)  →	o→

Accepted Answer

A)  LiCH3COO
B)  Li(CH3COO) 2
C)  MgOH
D)  Mg(OH) 2
E)  CH3OH F) A) and B)
G) C) and D)

Question 8

How many moles of H+(aq) ions are present in 750 mL of 0.65 M hydrochloric acid?

Accepted Answer

A)  1.2 mol
B)  0.98 mol
C)  0.87 mol
D)  0.65 mol
E)  0.49 molF) A) and E)
G) B) and E)

Question 9

How many moles of ions are released when 0.27 mol of cobalt(II) chloride,CoCl2,is dissolved in water?

Accepted Answer

A)  0.81 mol
B)  0.54 mol
C)  0.27 mol
D)  0.18 mol
E)  0.090 molF) B) and C)
G) None of the above

Question 10

An aqueous solution of lead nitrate,Pb(NO3)2,is mixed with one of sodium chromate,Na2CrO4,resulting in the formation of a precipitate of lead chromate.Write a balanced net ionic equation for this precipitation reaction,showing all phases.

Accepted Answer

Pb²⁺(aq)+...

Question 11

Which of the following is most soluble in water?

Accepted Answer

A)  benzene,C6H6
B)  potassium nitrate,KNO3
C)  carbon tetrachloride,CCl4
D)  hexane,C6H14
E)  ethane,C2H4F) B) and C)
G) C) and E)

Question 12

Which of the following will be least soluble in water?

Accepted Answer

A)  potassium sulfate,K2SO4
B)  ammonium nitrate,NH4NO3
C)  chloromethane,CH3Cl
D)  calcium chloride,CaCl2
E)  ethanol,C2H6OF) C) and E)
G) A) and D)

Question 13

How many moles of ions are released when 1.6 mol of ammonium phosphate, (NH4) 3PO4,is dissolved in water?

Accepted Answer

A)  0.40 mol
B)  1.6 mol
C)  3.2 mol
D)  4.8 mol
E)  6.4 molF) C) and E)
G) C) and D)

Question 14

A particular reaction may be both a precipitation and an acid-base (neutralization)reaction.

Accepted Answer

A) True 
 B)False

Question 15

In an acid-base (neutralization)reaction the indicator will change color at the end point.

Accepted Answer

A) True 
 B)False

Question 16

Which one of the following is not a redox reaction?

Accepted Answer

A)  2H2O2(aq)   →	o→  2H2O(l) + O2(g) 
B)  N2(g) + 3H2(g)   →	o→  2NH3(g) 
C)  BaCl2(aq) + K2CrO4(aq)   →	o→  BaCrO4(aq) + 2KCl(aq) 
D)  2Al(s) + Fe2O3(s)   →	o→  Al2O3(s) + 2Fe(s) 
E)  2H2O(g)   →	o→  2H2(g) + O2(g)  F) A) and B)
G) A) and C)

Question 17

Potassium carbonate,K2CO3,sodium iodide,NaI,magnesium chloride,MgCl2,methanol,CH3OH,and ammonium chloride,NH4Cl,are soluble in water.Which produces the largest number of dissolved particles per mole of dissolved solute?

Accepted Answer

A)  K2CO3
B)  NaI
C)  MgCl2
D)  CH3OH
E)  NH4ClF) D) and E)
G) All of the above

Question 18

Select the correct name and chemical formula for the precipitate that forms when the following reactants are mixed.
CuCl2(aq) + Na2CO3(aq)  →	o→

Accepted Answer

A)  copper(I) carbonate,Cu2CO3
B)  copper(II) carbonate,Cu2CO3
C)  copper(I) carbonate,CuCO3
D)  copper(II) carbonate,CuCO3
E)  sodium chloride,NaCl F) B) and E)
G) A) and C)

Question 19

Which of the following is a weak base?

Accepted Answer

A)  NH3
B)  Ca(OH) 2
C)  Ba(OH) 2
D)  NaOH
E)  CH3COOHF) A) and B)
G) A) and E)

Question 20

How many moles of H+(aq) ions are present in 1.25 L of 0.75 M nitric acid?

Accepted Answer

A)  0.60 mol
B)  0.75 mol
C)  0.94 mol
D)  1.7 mol
E)  1.9 molF) C) and D)
G) B) and E)

Exam 4: Three Major Classes of Chemical Reactions

Potassium carbonate,K₂CO₃,sodium iodide,NaI,magnesium chloride,MgCl₂,methanol,CH₃OH,and ammonium chloride,NH₄Cl,are soluble in water.Which produces the largest number of dissolved particles per mole of dissolved solute?

Correct Answer
verified

Which of the following will be least soluble in water?

Correct Answer
verified

Which one of the following is not a redox reaction?

Correct Answer
verified

A particular reaction may be both a precipitation and an acid-base (neutralization)reaction.

Correct Answer
verified

Predict the product(s) for the following reaction. Cl₂O₇(g) + H₂O(l) $\to$

Correct Answer
verified

How many moles of ions are released when 1.6 mol of ammonium phosphate, (NH₄) ₃PO₄,is dissolved in water?

Correct Answer
verified

How many moles of ions are released when 0.27 mol of cobalt(II) chloride,CoCl₂,is dissolved in water?

Correct Answer
verified

How many moles of H⁺(aq) ions are present in 750 mL of 0.65 M hydrochloric acid?

Correct Answer
verified

Select the classification for the following reaction. Fe(s) + 2Fe³⁺(aq) $\to$ 3Fe²⁺(aq)

Correct Answer
verified

In an acid-base (neutralization)reaction the indicator will change color at the end point.

Correct Answer
verified

Which of the following solutions will be the poorest conductor of electrical current?

Correct Answer
verified

Select the precipitate that forms when the following reactants are mixed. Mg(CH₃COO) ₂(aq) + LiOH(aq) $\to$

Correct Answer
verified

How many moles of H⁺(aq) ions are present in 1.25 L of 0.75 M nitric acid?

Correct Answer
verified

An aqueous solution of lead nitrate,Pb(NO₃)₂,is mixed with one of sodium chromate,Na₂CrO₄,resulting in the formation of a precipitate of lead chromate.Write a balanced net ionic equation for this precipitation reaction,showing all phases.

Correct Answer
verified
Pb²⁺(aq)+...
View Answer

Which of the following is most soluble in water?

Correct Answer
verified

a.Define "oxidation". b.Identify the oxidizing and reducing agents in the following (unbalanced)equation. HNO₃(aq)+ C₂H₆O(aq)+ K₂Cr₂O₇(aq) $\to$ KNO₃(aq)+ C₂H₄O(aq)+ H₂O(l)+ Cr(NO₃)₃(aq)

Correct Answer
verified
a.Oxidation: loss of electrons...
View Answer

Correct Answer
verified

In the following reaction,what ions,if any,are spectator ions? Pb(NO₃) ₂(aq) + 2NaCl(aq) $\to$ PbCl₂(s) + 2NaNO₃(aq)

Correct Answer
verified

Select the correct name and chemical formula for the precipitate that forms when the following reactants are mixed. CuCl₂(aq) + Na₂CO₃(aq) $\to$

Correct Answer
verified

Which of the following is a weak base?

Correct Answer
verified

Exam 4: Three Major Classes of Chemical Reactions

Potassium carbonate,K2CO3,sodium iodide,NaI,magnesium chloride,MgCl2,methanol,CH3OH,and ammonium chloride,NH4Cl,are soluble in water.Which produces the largest number of dissolved particles per mole of dissolved solute?

Correct AnswerverifiedShow Answer

Which of the following will be least soluble in water?

Correct AnswerverifiedShow Answer

Which one of the following is not a redox reaction?

Correct AnswerverifiedShow Answer

A particular reaction may be both a precipitation and an acid-base (neutralization)reaction.

Correct AnswerverifiedShow Answer

Predict the product(s) for the following reaction. Cl2O7(g) + H2O(l) →\to→

Correct AnswerverifiedShow Answer

How many moles of ions are released when 1.6 mol of ammonium phosphate, (NH4) 3PO4,is dissolved in water?

Correct AnswerverifiedShow Answer

How many moles of ions are released when 0.27 mol of cobalt(II) chloride,CoCl2,is dissolved in water?

Correct AnswerverifiedShow Answer

How many moles of H+(aq) ions are present in 750 mL of 0.65 M hydrochloric acid?

Correct AnswerverifiedShow Answer

Select the classification for the following reaction. Fe(s) + 2Fe3+(aq) →\to→ 3Fe2+(aq)

Correct AnswerverifiedShow Answer

In an acid-base (neutralization)reaction the indicator will change color at the end point.

Correct AnswerverifiedShow Answer

Which of the following solutions will be the poorest conductor of electrical current?

Correct AnswerverifiedShow Answer

Select the precipitate that forms when the following reactants are mixed. Mg(CH3COO) 2(aq) + LiOH(aq) →\to→

Correct AnswerverifiedShow Answer

How many moles of H+(aq) ions are present in 1.25 L of 0.75 M nitric acid?

Correct AnswerverifiedShow Answer

An aqueous solution of lead nitrate,Pb(NO3)2,is mixed with one of sodium chromate,Na2CrO4,resulting in the formation of a precipitate of lead chromate.Write a balanced net ionic equation for this precipitation reaction,showing all phases.

Correct AnswerverifiedPb2+(aq)+...View AnswerShow Answer

Which of the following is most soluble in water?

Correct AnswerverifiedShow Answer

a.Define "oxidation". b.Identify the oxidizing and reducing agents in the following (unbalanced)equation. HNO3(aq)+ C2H6O(aq)+ K2Cr2O7(aq) →\to→ KNO3(aq)+ C2H4O(aq)+ H2O(l)+ Cr(NO3)3(aq)

Correct Answerverifieda.Oxidation: loss of electrons...View AnswerShow Answer

Correct AnswerverifiedShow Answer

In the following reaction,what ions,if any,are spectator ions? Pb(NO3) 2(aq) + 2NaCl(aq) →\to→ PbCl2(s) + 2NaNO3(aq)

Correct AnswerverifiedShow Answer

Select the correct name and chemical formula for the precipitate that forms when the following reactants are mixed. CuCl2(aq) + Na2CO3(aq) →\to→

Correct AnswerverifiedShow Answer

Which of the following is a weak base?

Correct AnswerverifiedShow Answer

Potassium carbonate,K₂CO₃,sodium iodide,NaI,magnesium chloride,MgCl₂,methanol,CH₃OH,and ammonium chloride,NH₄Cl,are soluble in water.Which produces the largest number of dissolved particles per mole of dissolved solute?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Predict the product(s) for the following reaction. Cl₂O₇(g) + H₂O(l) $\to$

Correct Answer
verified

How many moles of ions are released when 1.6 mol of ammonium phosphate, (NH₄) ₃PO₄,is dissolved in water?

Correct Answer
verified

How many moles of ions are released when 0.27 mol of cobalt(II) chloride,CoCl₂,is dissolved in water?

Correct Answer
verified

How many moles of H⁺(aq) ions are present in 750 mL of 0.65 M hydrochloric acid?

Correct Answer
verified

Select the classification for the following reaction. Fe(s) + 2Fe³⁺(aq) $\to$ 3Fe²⁺(aq)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Select the precipitate that forms when the following reactants are mixed. Mg(CH₃COO) ₂(aq) + LiOH(aq) $\to$

Correct Answer
verified

How many moles of H⁺(aq) ions are present in 1.25 L of 0.75 M nitric acid?

Correct Answer
verified

An aqueous solution of lead nitrate,Pb(NO₃)₂,is mixed with one of sodium chromate,Na₂CrO₄,resulting in the formation of a precipitate of lead chromate.Write a balanced net ionic equation for this precipitation reaction,showing all phases.

Correct Answer
verified
Pb²⁺(aq)+...
View Answer

Correct Answer
verified

a.Define "oxidation". b.Identify the oxidizing and reducing agents in the following (unbalanced)equation. HNO₃(aq)+ C₂H₆O(aq)+ K₂Cr₂O₇(aq) $\to$ KNO₃(aq)+ C₂H₄O(aq)+ H₂O(l)+ Cr(NO₃)₃(aq)

Correct Answer
verified
a.Oxidation: loss of electrons...
View Answer

Correct Answer
verified

In the following reaction,what ions,if any,are spectator ions? Pb(NO₃) ₂(aq) + 2NaCl(aq) $\to$ PbCl₂(s) + 2NaNO₃(aq)

Correct Answer
verified

Select the correct name and chemical formula for the precipitate that forms when the following reactants are mixed. CuCl₂(aq) + Na₂CO₃(aq) $\to$

Correct Answer
verified

Correct Answer
verified