Question 1

What volume of a 0.540 M NaOH solution contains 12.5 g of NaOH?

Accepted Answer

A)  0. 169 L 
B)  0. 579 L 
C)  1. 73 L 
D)  5.92 L 
A)  0. 169 L 
B)  0. 579 L 
C)  1. 73 L 
D)  5.92 L

Question 2

Which one of the following compounds is soluble in water?

Accepted Answer

A)  Ca3(PO4)2 
B)  HgS 
C)  Ni(NO3)2 
D)  MgCO3 
A)  Ca3(PO4)2 
B)  HgS 
C)  Ni(NO3)2 
D)  MgCO3

Question 3

How many milliliters of a stock solution of 12.1 M   would be needed to prepare 0.500 L of 0.500 M   ?

Accepted Answer

A)  0.0484 
B)  20.7 
C)  3.03 
D)  48.4 
E)  0.0207 
A)  0.0484 
B)  20.7 
C)  3.03 
D)  48.4 
E)  0.0207

Question 4

Determine the oxidation state of Cl in ClO3-.

Accepted Answer

A)  +1 
B)  +3 
C)  +5 
D)  +7 
E)  0 
A)  +1 
B)  +3 
C)  +5 
D)  +7 
E)  0

Question 5

How many milliliters of a 0.184 M RbNO3 solution contain 0.113 moles of RbNO3?

Accepted Answer

A)  543 mL 
B)  163 mL 
C)  614 mL 
D)  885 mL 
E)  326 mL 
A)  543 mL 
B)  163 mL 
C)  614 mL 
D)  885 mL 
E)  326 mL

Question 6

A FeCl3 solution is 0.175 M.How many mL of a 0.175 M FeCl3 solution are needed to make 650.mL of a solution that is 0.300 M in Cl- ion?

Accepted Answer

A)  1.11 mL 
B)  371 mL 
C)  1110 mL 
D)  It is not possible to make a more concentrated solution from a less concentrated solution. 
A)  1.11 mL 
B)  371 mL 
C)  1110 mL 
D)  It is not possible to make a more concentrated solution from a less concentrated solution.

Question 7

The titration of 80.0 mL of an unknown concentration H3PO4 solution requires 126 mL of 0.218 M KOH solution.What is the concentration of the H3PO4 solution (in M)?

Accepted Answer

A)  1.03 M 
B)  0.343 M 
C)  0.114 M 
D)  0.138 M 
E)  0.0461 M 
A)  1.03 M 
B)  0.343 M 
C)  0.114 M 
D)  0.138 M 
E)  0.0461 M

Question 8

What is the molarity of a potassium triiodide solution,KI3(aq),if 30.00 mL of the solution is required to completely react with 25.00 mL of a 0.300 M thiosulfate solution,K2S2O3(aq)? The chemical equation for the reaction is
2 S2O32-(aq)+ I3-(aq)→ S4O62-(aq)+ 3 I-(aq).

Accepted Answer

A)  0. 125 M 
B)  0. 180 M 
C)  0. 250 M 
D)  0.500 M 
A)  0. 125 M 
B)  0. 180 M 
C)  0. 250 M 
D)  0.500 M

Question 9

When dissolved in water,RbOH behaves as

Accepted Answer

A)  an acid that forms Rb+ and OH- ions. 
B)  an acid that forms RbO- and H+ ions. 
C)  a base that forms Rb+ and OH- ions. 
D)  a base that forms RbO- and H+ ions. 
A)  an acid that forms Rb+ and OH- ions. 
B)  an acid that forms RbO- and H+ ions. 
C)  a base that forms Rb+ and OH- ions. 
D)  a base that forms RbO- and H+ ions.

Question 10

Give the net ionic equation for the reaction (if any)that occurs when aqueous solutions of K2S and Fe(NO3)2 are mixed.

Accepted Answer

A)  K+(aq) + NO3-(aq) → KNO3(s) 
B)  Fe2+(aq) + S2-(aq) + 2 K+(aq) + 2 NO3-(aq) → FeS(s) + 2 K+(aq) + 2 NO3-(aq) 
C)  Fe2+(aq) + S2-(aq) + 2 K+(aq) + 2 NO3-(aq) → Fe2+(aq) + S2-(aq) + 2 KNO3(s) 
D)  Fe2+(aq) + S2-(aq) → FeS(s) 
E)  No reaction occurs. 
A)  K+(aq) + NO3-(aq) → KNO3(s) 
B)  Fe2+(aq) + S2-(aq) + 2 K+(aq) + 2 NO3-(aq) → FeS(s) + 2 K+(aq) + 2 NO3-(aq) 
C)  Fe2+(aq) + S2-(aq) + 2 K+(aq) + 2 NO3-(aq) → Fe2+(aq) + S2-(aq) + 2 KNO3(s) 
D)  Fe2+(aq) + S2-(aq) → FeS(s) 
E)  No reaction occurs.

Question 11

There are ________ mol of bromide ions in 0.500 L of a 0.300M solution of Al   .

Accepted Answer

The answer of There are ________ mol of bromide ions...

Question 12

How many grams of C   OH must be added to water to prepare 175mL of a solution that is 1.0 M CH3OH?

Accepted Answer

Question 13

Identify the polyprotic acid.

Accepted Answer

A)  H2SO4 
B)  HCl 
C)  Li I 
D)  NaOH 
E)  Ba(OH)2 
A)  H2SO4 
B)  HCl 
C)  Li I 
D)  NaOH 
E)  Ba(OH)2

Question 14

What is the concentration of HCl in the final solution when 65 mL of a 9.0 M HCl solution is diluted with pure water to a total volume of 0.15 L?

Accepted Answer

A)  2.1 × 10-2 M 
B)  3.9 M 
C)  21 M 
D)  3.9 × 103 M 
A)  2.1 × 10-2 M 
B)  3.9 M 
C)  21 M 
D)  3.9 × 103 M

Question 15

Which of the compounds H3PO4  ,Mg(OH)2,LiOH,and H Cl,behave as bases when they are dissolved in water?

Accepted Answer

A)  Mg(OH)2 and LiOH 
B)  H3PO4  and H Cl 
C)  only H Cl 
D)  only LiOH 
A)  Mg(OH)2 and LiOH 
B)  H3PO4  and H Cl 
C)  only H Cl 
D)  only LiOH

Question 16

How many sodium ions are present in 30.0 mL of 0.600 M Na2CO3 solution?

Accepted Answer

A)  3.25 × 1022 ions 
B)  2.17 × 1022 ions 
C)  1.08 × 1022 ions 
D)  5.42 × 1022 ions 
E)  3.61 × 1021 ions 
A)  3.25 × 1022 ions 
B)  2.17 × 1022 ions 
C)  1.08 × 1022 ions 
D)  5.42 × 1022 ions 
E)  3.61 × 1021 ions

Question 17

The mixing of which pair of reactants will result in a precipitation reaction?

Accepted Answer

A)  CsI(aq) + NaOH(aq) 
B)  HCl(aq) + Ca(OH)2(aq) 
C)  K2SO4(aq) + Ba (NO3)2(aq) 
D)  NaNO3(aq) + NH4Cl(aq) 
A)  CsI(aq) + NaOH(aq) 
B)  HCl(aq) + Ca(OH)2(aq) 
C)  K2SO4(aq) + Ba (NO3)2(aq) 
D)  NaNO3(aq) + NH4Cl(aq)

Question 18

Give the complete ionic equation for the reaction (if any)that occurs when aqueous solutions of MgSO3 and HI are mixed.

Accepted Answer

A)  2 H+(aq) + SO32-(aq) → H2SO3(s) 
B)  Mg2+(aq) + 2 I-(aq) → MgI2(s) 
C)  2 H+(aq) + SO32-(aq) + Mg2+(aq) + 2 I-(aq)→ H2SO3(s) + MgI2(aq) 
D)  2 H+(aq) + SO32-(aq) → H2O(l) + SO2(g) 
E)  No reaction occurs. 
A)  2 H+(aq) + SO32-(aq) → H2SO3(s) 
B)  Mg2+(aq) + 2 I-(aq) → MgI2(s) 
C)  2 H+(aq) + SO32-(aq) + Mg2+(aq) + 2 I-(aq)→ H2SO3(s) + MgI2(aq) 
D)  2 H+(aq) + SO32-(aq) → H2O(l) + SO2(g) 
E)  No reaction occurs.

Question 19

What is the molar concentration of sodium ions in a 0.550 M Na3PO4 solution?

Accepted Answer

A)  0. 183 M 
B)  0. 550 M 
C)  1.65 M 
D)  2.20 M 
A)  0. 183 M 
B)  0. 550 M 
C)  1.65 M 
D)  2.20 M

Question 20

What is the concentration of an AlCl3 solution if 150.mL of the solution contains 550.mg of Cl- ion?

Accepted Answer

A)  3.45 × 10-2 M 
B)  8.25 × 10-2 M 
C)  1.03 × 10-1 M 
D)  3.10 × 10-1 M 
A)  3.45 × 10-2 M 
B)  8.25 × 10-2 M 
C)  1.03 × 10-1 M 
D)  3.10 × 10-1 M

Exam 9: Introduction to Solutions and Aqueous Reactions

What volume of a 0.540 M NaOH solution contains 12.5 g of NaOH?

Which one of the following compounds is soluble in water?

How many milliliters of a stock solution of 12.1 M would be needed to prepare 0.500 L of 0.500 M ?

Determine the oxidation state of Cl in ClO3-.

How many milliliters of a 0.184 M RbNO3 solution contain 0.113 moles of RbNO3?

A FeCl3 solution is 0.175 M.How many mL of a 0.175 M FeCl3 solution are needed to make 650.mL of a solution that is 0.300 M in Cl- ion?

The titration of 80.0 mL of an unknown concentration H3PO4 solution requires 126 mL of 0.218 M KOH solution.What is the concentration of the H3PO4 solution (in M)?

What is the molarity of a potassium triiodide solution,KI3(aq),if 30.00 mL of the solution is required to completely react with 25.00 mL of a 0.300 M thiosulfate solution,K2S2O3(aq)? The chemical equation for the reaction is 2 S2O32-(aq)+ I3-(aq)→ S4O62-(aq)+ 3 I-(aq).

When dissolved in water,RbOH behaves as

Give the net ionic equation for the reaction (if any)that occurs when aqueous solutions of K2S and Fe(NO3)2 are mixed.

There are ________ mol of bromide ions in 0.500 L of a 0.300M solution of Al .

How many grams of C OH must be added to water to prepare 175mL of a solution that is 1.0 M CH3OH?

Identify the polyprotic acid.

What is the concentration of HCl in the final solution when 65 mL of a 9.0 M HCl solution is diluted with pure water to a total volume of 0.15 L?

Which of the compounds H3PO4 ,Mg(OH)2,LiOH,and H Cl,behave as bases when they are dissolved in water?

How many sodium ions are present in 30.0 mL of 0.600 M Na2CO3 solution?

The mixing of which pair of reactants will result in a precipitation reaction?

Give the complete ionic equation for the reaction (if any)that occurs when aqueous solutions of MgSO3 and HI are mixed.

What is the molar concentration of sodium ions in a 0.550 M Na3PO4 solution?

What is the concentration of an AlCl3 solution if 150.mL of the solution contains 550.mg of Cl- ion?

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

Determine the oxidation state of Cl in ClO₃^-.

How many milliliters of a 0.184 M RbNO₃ solution contain 0.113 moles of RbNO₃?

A FeCl₃ solution is 0.175 M.How many mL of a 0.175 M FeCl₃solution are needed to make 650.mL of a solution that is 0.300 M in Cl^- ion?

The titration of 80.0 mL of an unknown concentration H₃PO₄ solution requires 126 mL of 0.218 M KOH solution.What is the concentration of the H₃PO₄ solution (in M)?

What is the molarity of a potassium triiodide solution,KI₃(aq),if 30.00 mL of the solution is required to completely react with 25.00 mL of a 0.300 M thiosulfate solution,K₂S₂O₃(aq)? The chemical equation for the reaction is 2 S₂O₃^2-(aq)+ I₃^-(aq)→ S₄O₆^2-(aq)+ 3 I^-(aq).

Give the net ionic equation for the reaction (if any)that occurs when aqueous solutions of K₂S and Fe(NO₃)₂ are mixed.

How many grams of C OH must be added to water to prepare 175mL of a solution that is 1.0 M CH₃OH?

Which of the compounds H₃PO₄ ,Mg(OH)₂,LiOH,and H Cl,behave as bases when they are dissolved in water?

How many sodium ions are present in 30.0 mL of 0.600 M Na₂CO₃ solution?

Give the complete ionic equation for the reaction (if any)that occurs when aqueous solutions of MgSO₃ and HI are mixed.

What is the molar concentration of sodium ions in a 0.550 M Na₃PO₄ solution?

What is the concentration of an AlCl₃ solution if 150.mL of the solution contains 550.mg of Cl^- ion?