Question 1

What is the molarity of a NaOH solution if 39.1 mL of a 0.112 M     solution is required to neutralize a 25.0-mL sample of the NaOH solution?

Accepted Answer

A)  0.350 
B)  0.0716 
C)  0.143 
D)  54.7 
E)  0.175 
A)  0.350 
B)  0.0716 
C)  0.143 
D)  54.7 
E)  0.175

Question 2

Which of the following pairs of aqueous solutions will form a precipitate when mixed?

Accepted Answer

A)  KOH + Li2S 
B)  (NH4)2SO4 + LiCl 
C)  Sr(C2H3O2)2 + Li2SO4 
D)  KNO3 + LiOH 
E)  None of the above solution pairs will produce a precipitate. 
A)  KOH + Li2S 
B)  (NH4)2SO4 + LiCl 
C)  Sr(C2H3O2)2 + Li2SO4 
D)  KNO3 + LiOH 
E)  None of the above solution pairs will produce a precipitate.

Question 3

Identify K OH.

Accepted Answer

A)  weak acid 
B)  weak electrolyte 
C)  strong acid 
D)  strong electrolyte 
E)  nonelectrolyte 
A)  weak acid 
B)  weak electrolyte 
C)  strong acid 
D)  strong electrolyte 
E)  nonelectrolyte

Question 4

What is the oxidation number of the oxygen atom in  O22-?

Accepted Answer

A)  -2 
B)  -1 
C)  +1 
D)  +2 
A)  -2 
B)  -1 
C)  +1 
D)  +2

Question 5

Silver ions can be precipitated from aqueous solutions by the addition of aqueous chloride:   (aq)+   (aq)→ AgCl(s) Silver chloride is virtually insoluble in water so that the reaction appears to go to completion.How many grams of solid NaCl must be added to 25.0 mL of 0.175 M   solution to completely precipitate the silver?

Accepted Answer

A)  4.38 ×   g 
B)  7.49 × 10-5 g 
C)  0.256 g 
D)  0.0749 g 
E)  1.34 × 104 g 
A)  4.38 ×   g 
B)  7.49 × 10-5 g 
C)  0.256 g 
D)  0.0749 g 
E)  1.34 × 104 g

Question 6

In an acid-base neutralization reaction 23.74 mL of 0.500 M potassium hydroxide reacts with 50.00 mL of sulfuric acid solution.What is the concentration of the H2SO4 solution?

Accepted Answer

A)  0. 119 M 
B)  0. 237 M 
C)  0. 475 M 
D)  2.11 M 
A)  0. 119 M 
B)  0. 237 M 
C)  0. 475 M 
D)  2.11 M

Question 7

If 100.mL of 0.200 M Na2SO4 is added to 200.mL of 0.300 M NaCl,what is the concentration of Na+ ions in the final solution? Assume that the volumes are additive.

Accepted Answer

A)  0.267 M 
B)  0.333 M 
C)  0.500 M 
D)  0.700 M 
A)  0.267 M 
B)  0.333 M 
C)  0.500 M 
D)  0.700 M

Question 8

According to the following reaction,what volume of 0.244 M KCl solution is required to react exactly with 50.0 mL of 0.210 M Pb(NO3)2 solution?
2 KCl(aq)+ Pb(NO3)2(aq)→ PbCl2(s)+ 2 KNO3(aq)

Accepted Answer

A)  97.4 mL 
B)  116 mL 
C)  43.0 mL 
D)  86.1 mL 
E)  58.1 mL 
A)  97.4 mL 
B)  116 mL 
C)  43.0 mL 
D)  86.1 mL 
E)  58.1 mL

Question 9

Determine the name for aqueous H Br.

Accepted Answer

A)  bromic acid 
B)  bromous acid 
C)  hydro bromous acid 
D)  hydrogen bromate 
E)  hydro bromic acid 
A)  bromic acid 
B)  bromous acid 
C)  hydro bromous acid 
D)  hydrogen bromate 
E)  hydro bromic acid

Question 10

What element is undergoing oxidation (if any)in the following reaction?
2 MnO4-(aq)+ 3 NO2-(aq)+ H2O(l)→ 2 MnO2(s)+ 3 NO3-(aq)+ 2 OH-(aq)

Accepted Answer

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

Question 11

What mass (in g)of AgCl is formed from the reaction of 75.0 mL of a 0.078 M AgC2H3O2 solution with 55.0 mL of 0.109 M MgCl2 solution?
2 AgC2H3O2(aq)+ MgCl2(aq)→ 2 AgCl(s)+ Mg(C2H3O2)2(aq)

Accepted Answer

A)  0.838 g 
B)  1.72 g 
C)  0.859 g 
D)  2.56 g 
E)  1.70 g 
A)  0.838 g 
B)  1.72 g 
C)  0.859 g 
D)  2.56 g 
E)  1.70 g

Question 12

How many grams of   P   are in 325 mL of a 5.50 M solution of   P   ?

Accepted Answer

The answer of How many grams of   P...

Question 13

What volume of 0.305 M AgNO3 is required to react exactly with 155.0 mL of 0.274 M Na2SO4 solution? Hint: You will want to write a balanced reaction.

Accepted Answer

A)  581 mL 
B)  173 mL 
C)  345 mL 
D)  139 mL 
E)  278 mL 
A)  581 mL 
B)  173 mL 
C)  345 mL 
D)  139 mL 
E)  278 mL

Question 14

Based on the balanced chemical equation shown below,what volume of 0.250 M K2S2O3(aq),is needed to completely react with 12.44 mL of 0.125 M KI3(aq),according to the following chemical equation. 2 S2O32-(aq)+ I3-(aq)→ S4O62-(aq)+ 3 I-(aq)

Accepted Answer

A)  3.11 mL 
B)  6.22 mL 
C)  12.4 mL 
D)  49.8 mL 
A)  3.11 mL 
B)  6.22 mL 
C)  12.4 mL 
D)  49.8 mL

Question 15

Give the name for HNO2.

Accepted Answer

Question 16

Identify sugar.

Accepted Answer

A)  strong electrolyte, weak acid 
B)  weak electrolyte, weak acid 
C)  strong electrolyte, strong acid 
D)  weak electrolyte, strong acid 
E)  nonelectrolyte 
A)  strong electrolyte, weak acid 
B)  weak electrolyte, weak acid 
C)  strong electrolyte, strong acid 
D)  weak electrolyte, strong acid 
E)  nonelectrolyte

Question 17

How many of the following compounds are soluble in water?
Cu(OH)2 LiNO3 NH4I Na2S

Accepted Answer

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

Question 18

How many H+ ions can the acid,H2SeO4 ,donate per molecule?

Accepted Answer

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

Question 19

Based on the balanced chemical equation shown below,determine the mass percent of Fe3+ in a   sample of iron ore,if 22.40 mL of a 0.1000 M stannous chloride,SnCl2(aq),solution is required to completely react with the Fe3+ present in the ore sample.The chemical equation for the reaction is 2 Fe3+(aq)+ Sn2+(aq)→ 2 Fe2+(aq)+ Sn4+(aq).

Accepted Answer

A)  11.59% 
B)  18.13% 
C)  36.26% 
D)  72.52% 
A)  11.59% 
B)  18.13% 
C)  36.26% 
D)  72.52%

Question 20

Which of the following compounds is insoluble in water?

Accepted Answer

A)  Ag Cl 
B)  (NH4)3PO4 
C)  FeSO4  
D)  SrS 
E)  All of these compounds are soluble in water. 
A)  Ag Cl 
B)  (NH4)3PO4 
C)  FeSO4  
D)  SrS 
E)  All of these compounds are soluble in water.

Exam 9: Introduction to Solutions and Aqueous Reactions

What is the molarity of a NaOH solution if 39.1 mL of a 0.112 M solution is required to neutralize a 25.0-mL sample of the NaOH solution?

Which of the following pairs of aqueous solutions will form a precipitate when mixed?

Identify K OH.

What is the oxidation number of the oxygen atom in O22-?

In an acid-base neutralization reaction 23.74 mL of 0.500 M potassium hydroxide reacts with 50.00 mL of sulfuric acid solution.What is the concentration of the H2SO4 solution?

If 100.mL of 0.200 M Na2SO4 is added to 200.mL of 0.300 M NaCl,what is the concentration of Na+ ions in the final solution? Assume that the volumes are additive.

According to the following reaction,what volume of 0.244 M KCl solution is required to react exactly with 50.0 mL of 0.210 M Pb(NO3)2 solution? 2 KCl(aq)+ Pb(NO3)2(aq)→ PbCl2(s)+ 2 KNO3(aq)

Determine the name for aqueous H Br.

What element is undergoing oxidation (if any)in the following reaction? 2 MnO4-(aq)+ 3 NO2-(aq)+ H2O(l)→ 2 MnO2(s)+ 3 NO3-(aq)+ 2 OH-(aq)

What mass (in g)of AgCl is formed from the reaction of 75.0 mL of a 0.078 M AgC2H3O2 solution with 55.0 mL of 0.109 M MgCl2 solution? 2 AgC2H3O2(aq)+ MgCl2(aq)→ 2 AgCl(s)+ Mg(C2H3O2)2(aq)

How many grams of P are in 325 mL of a 5.50 M solution of P ?

What volume of 0.305 M AgNO3 is required to react exactly with 155.0 mL of 0.274 M Na2SO4 solution? Hint: You will want to write a balanced reaction.

Based on the balanced chemical equation shown below,what volume of 0.250 M K2S2O3(aq),is needed to completely react with 12.44 mL of 0.125 M KI3(aq),according to the following chemical equation. 2 S2O32-(aq)+ I3-(aq)→ S4O62-(aq)+ 3 I-(aq)

Give the name for HNO2.

Identify sugar.

How many of the following compounds are soluble in water? Cu(OH)2 LiNO3 NH4I Na2S

How many H+ ions can the acid,H2SeO4 ,donate per molecule?

Which of the following compounds is insoluble in water?

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

What is the oxidation number of the oxygen atom in O₂^2-?

In an acid-base neutralization reaction 23.74 mL of 0.500 M potassium hydroxide reacts with 50.00 mL of sulfuric acid solution.What is the concentration of the H₂SO₄ solution?

If 100.mL of 0.200 M Na₂SO₄ is added to 200.mL of 0.300 M NaCl,what is the concentration of Na⁺ ions in the final solution? Assume that the volumes are additive.

According to the following reaction,what volume of 0.244 M KCl solution is required to react exactly with 50.0 mL of 0.210 M Pb(NO₃)₂ solution? 2 KCl(aq)+ Pb(NO₃)₂(aq)→ PbCl₂(s)+ 2 KNO₃(aq)

What element is undergoing oxidation (if any)in the following reaction? 2 MnO₄^-(aq)+ 3 NO₂^-(aq)+ H₂O(l)→ 2 MnO₂(s)+ 3 NO₃^-(aq)+ 2 OH^-(aq)

What mass (in g)of AgCl is formed from the reaction of 75.0 mL of a 0.078 M AgC₂H₃O₂ solution with 55.0 mL of 0.109 M MgCl₂ solution? 2 AgC₂H₃O₂(aq)+ MgCl₂(aq)→ 2 AgCl(s)+ Mg(C₂H₃O₂)₂(aq)

What volume of 0.305 M AgNO₃ is required to react exactly with 155.0 mL of 0.274 M Na₂SO₄ solution? Hint: You will want to write a balanced reaction.

Based on the balanced chemical equation shown below,what volume of 0.250 M K₂S₂O₃(aq),is needed to completely react with 12.44 mL of 0.125 M KI₃(aq),according to the following chemical equation. 2 S₂O₃^2-(aq)+ I₃^-(aq)→ S₄O₆^2-(aq)+ 3 I^-(aq)

Give the name for HNO₂.

How many of the following compounds are soluble in water? Cu(OH)₂ LiNO₃ NH₄I Na₂S

How many H⁺ ions can the acid,H₂SeO₄ ,donate per molecule?