Question 1

How many equivalents of sulfuric acid will react with 0.15 eq of barium hydroxide?

Accepted Answer

A) 0.075 eq 
B) 0.30 eq 
C) 0.45 eq 
D) 0.60 eq 
E) 0.15 eq 
A) 0.075 eq 
B) 0.30 eq 
C) 0.45 eq 
D) 0.60 eq 
E) 0.15 eq

Question 2

You are required to prepare a 3.50% AgNO3 solution,using 5.00 g of silver nitrate.What mass of water will be needed?

Accepted Answer

A) 143 g 
B) 148 g 
C) 138 g 
D) 125 g 
E) 17.5 g 
A) 143 g 
B) 148 g 
C) 138 g 
D) 125 g 
E) 17.5 g

Question 3

Calculate the normality of a potassium hydroxide solution if 27.7 mL of the solution is needed to neutralize 0.477 g of sulfamic acid in the reaction NH2SO3H + KOH → NH2SO3K + H2O.

Accepted Answer

A) 3.57 × 10-4 N 
B) 1.77 × 10-4 N 
C) 4.38 × 103 N 
D) 5.64 N 
E) 0.177 N 
A) 3.57 × 10-4 N 
B) 1.77 × 10-4 N 
C) 4.38 × 103 N 
D) 5.64 N 
E) 0.177 N

Question 4

What is the molal boiling point constant for a solvent that has a boiling point elevation of 2.5°C when 10.0 g of a solute of molar mass 72.0 g/mol is dissolved in 0.314 kg of the solvent?

Accepted Answer

A) 5.7 °C/m 
B) 18 °C/m 
C) 0.25 °C/m 
D) 0.035 °C/m 
E) 8.0 °C/m 
A) 5.7 °C/m 
B) 18 °C/m 
C) 0.25 °C/m 
D) 0.035 °C/m 
E) 8.0 °C/m

Question 5

A 50.0 mL hydrochloric acid sample is analyzed for its concentration by titration.Determine the concentration of the sample,given that it requires 21.50 mL of 0.102 M sodium hydroxide solution to neutralize the acid.

Accepted Answer

A) 0.105 M 
B) 1.05 M 
C) 22.8 M 
D) 0.0439 M 
E) 0.237 M 
A) 0.105 M 
B) 1.05 M 
C) 22.8 M 
D) 0.0439 M 
E) 0.237 M

Question 6

When a saturated solution is in equilibrium with undissolved solute:

Accepted Answer

A) the solution separates into layers 
B) dissolving and crystallization stop 
C) the quantity of dissolved solute equals the quantity of undissolved solute 
D) the concentration of the solution remains constant 
E) the temperature increases until more solute dissolves 
A) the solution separates into layers 
B) dissolving and crystallization stop 
C) the quantity of dissolved solute equals the quantity of undissolved solute 
D) the concentration of the solution remains constant 
E) the temperature increases until more solute dissolves

Question 7

What volume of hydrogen gas,measured at STP,is produced in the reaction of excess aluminum with 50.0 mL of 0.935 M hydrochloric acid?

Accepted Answer

A) 0.531 L 
B) 1.06 L 
C) 2.12 L 
D) 0.0474 L 
E) 0.0237 L 
A) 0.531 L 
B) 1.06 L 
C) 2.12 L 
D) 0.0474 L 
E) 0.0237 L

Question 8

1.25 g C6H5COOH is dissolved in water and the solution is titrated with 33.5 mL of a solution of NaOH of an unknown concentration.Calculate the normality of the NaOH for the reaction C6H5COOH(aq)+ NaOH(aq)→ C6H5COONa(aq)+ H2O(   ).

Accepted Answer

A) 3.06 × 10-4 N 
B) 3.43 × 10-4 N 
C) 0.306 N 
D) 3.27 N 
E) 4.55 × 103 N 
A) 3.06 × 10-4 N 
B) 3.43 × 10-4 N 
C) 0.306 N 
D) 3.27 N 
E) 4.55 × 103 N

Question 9

Consider the volumetric flask shown below.The volume of the flask is 1.000 L.   Nitric acid is commercially available at a concentration of 15.9 M.What volume of this solution must be diluted to in this flask to prepare a 4.00 M solution?

Accepted Answer

A) 400 mL 
B) 39.8 mL 
C) 398 mL 
D) 25.2 mL 
E) 252 mL 
A) 400 mL 
B) 39.8 mL 
C) 398 mL 
D) 25.2 mL 
E) 252 mL

Question 10

Determine the decrease in the freezing point of a solution prepared by dissolving 5.02 grams of paradichlorobenzene,C6H4Cl2,in 75.0 grams of naphthalene,C10H8.Kf for naphthalene is 6.9°C/m.

Accepted Answer

A) 0.24°C 
B) 0.46°C 
C) 3.1°C 
D) 15°C 
E) 35°C 
A) 0.24°C 
B) 0.46°C 
C) 3.1°C 
D) 15°C 
E) 35°C

Question 11

Potassium hydrogen phthalate is used as a primary standard in finding the concentration of a solution of sodium hydroxide by the reaction KHC8H4O4 + NaOH → NaKC8H4O4 + H2O.What is the molarity of the base if 32.75 mL is required to titrate 1.732 g of the primary standard?

Accepted Answer

A) 0.5189 M 
B) 0.2590 M 
C) 1.732 M 
D) 3.861 M 
E) 3.275 M 
A) 0.5189 M 
B) 0.2590 M 
C) 1.732 M 
D) 3.861 M 
E) 3.275 M

Question 12

80.0 grams of potassium sulfate is dissolved in 3.20 × 102 grams of water.Find the percentage concentration by mass.

Accepted Answer

A) 15.0% 
B) 20.0% 
C) 25.0% 
D) 30.0% 
E) 256% 
A) 15.0% 
B) 20.0% 
C) 25.0% 
D) 30.0% 
E) 256%

Question 13

An unknown substance is known to be a nonelectrolyte,and it dissolves in water.Determine the approximate molar mass of the substance if 37.7 g of the substance dissolved in 1.00 × 102 mL of water has a boiling temperature of 102.73°C.Kb for water is 0.52°C/m.

Accepted Answer

A) 5.3 g/mol 
B) 1.4 g/mol 
C) 2.0 × 102 g/mol 
D) 3.8 × 102 g/mol 
E) 72 g/mol 
A) 5.3 g/mol 
B) 1.4 g/mol 
C) 2.0 × 102 g/mol 
D) 3.8 × 102 g/mol 
E) 72 g/mol

Question 14

Dilute laboratory bench reagents are generally 6.0 M.What volume of dilute HCl must be used to prepare 5.00 × 102 mL of 0.25 M HCl?

Accepted Answer

A) 8.3 mL 
B) 21 mL 
C) 12 mL 
D) 50 mL 
E) 42 mL 
A) 8.3 mL 
B) 21 mL 
C) 12 mL 
D) 50 mL 
E) 42 mL

Question 15

A hydrochloric acid solution is standardized by titrating against solid sodium carbonate as shown in the following image.The HCl is in the buret and the sodium carbonate in the flask.   The equation is 2 HCl(aq)+ Na2CO3(s)→ 2 NaCl(aq)+ H2O(   )+ CO2(g).If 23.4 mL of the solution is added from the buret to neutralize 0.157 g Na2CO3 in the flask.what is the molarity of the HCl solution?

Accepted Answer

A) 0.0316 M 
B) 0.0633 M 
C) 7.90 M 
D) 0.253 M 
E) 0.127 M 
A) 0.0316 M 
B) 0.0633 M 
C) 7.90 M 
D) 0.253 M 
E) 0.127 M

Question 16

Silver nitrate is commonly used to determine the chloride ion concentration in an aqueous solution.37.0 mL of 0.174 N AgNO3 is required to titrate the chloride ion in a 20.0 mL sample of zinc chloride solution.What is the normality of the zinc chloride? 2 AgNO3(aq)+ ZnCl2(aq)→ 2 AgCl(s)+ Zn(NO3)2(aq)

Accepted Answer

A) 0.0470 N 
B) 0.0941 N 
C) 0.161 N 
D) 0.322 N 
E) 0.644 N 
A) 0.0470 N 
B) 0.0941 N 
C) 0.161 N 
D) 0.322 N 
E) 0.644 N

Question 17

A pure solvent freezes at 43.4°C.The freezing temperature is 40.7°C when 17.5 g of CO(NH2)2 is dissolved in 1.00 × 102 g of the solvent.Calculate the molal freezing point constant of the solvent.

Accepted Answer

A) 0.027 °C/m 
B) 0.343 °C/m 
C) 0.93 °C/m 
D) 13.9 °C/m 
E) 14.9 °C/m 
A) 0.027 °C/m 
B) 0.343 °C/m 
C) 0.93 °C/m 
D) 13.9 °C/m 
E) 14.9 °C/m

Question 18

Calculate the normality of a solution made by dissolving 10.0 g of KOH in water to produce 125 mL of solution.

Accepted Answer

A) 1.43 N 
B) 0.178 N 
C) 0.713 N 
D) 2.86 N 
E) 1.25 N 
A) 1.43 N 
B) 0.178 N 
C) 0.713 N 
D) 2.86 N 
E) 1.25 N

Question 19

If 45.5 g of BaCl2 is dissolved in water to produce 2.74 L of solution,what is the molarity of the solution?

Accepted Answer

A) 0.219 M 
B) 0.599 M 
C) 0.263 M 
D) 0.0797 M 
E) 0.0962 M 
A) 0.219 M 
B) 0.599 M 
C) 0.263 M 
D) 0.0797 M 
E) 0.0962 M

Question 20

If ethane,CH3CH3,a gas,is bubbled into methanol,CH3OH,a liquid,it is logical to expect that this gas:

Accepted Answer

A) will dissolve in the methanol because of similar intermolecular attractions 
B) will dissolve in the methanol because their molar masses are so close 
C) will dissolve in the methanol because both molecules are polar 
D) will not dissolve in the methanol because one molecule exhibits hydrogen bonding and the other does not 
E) will not dissolve in the methanol because their molar masses are so close 
A) will dissolve in the methanol because of similar intermolecular attractions 
B) will dissolve in the methanol because their molar masses are so close 
C) will dissolve in the methanol because both molecules are polar 
D) will not dissolve in the methanol because one molecule exhibits hydrogen bonding and the other does not 
E) will not dissolve in the methanol because their molar masses are so close

How many equivalents of sulfuric acid will react with 0.15 eq of barium hydroxide?

You are required to prepare a 3.50% AgNO₃ solution,using 5.00 g of silver nitrate.What mass of water will be needed?

Calculate the normality of a potassium hydroxide solution if 27.7 mL of the solution is needed to neutralize 0.477 g of sulfamic acid in the reaction NH₂SO₃H + KOH → NH₂SO₃K + H₂O.

What is the molal boiling point constant for a solvent that has a boiling point elevation of 2.5°C when 10.0 g of a solute of molar mass 72.0 g/mol is dissolved in 0.314 kg of the solvent?

A 50.0 mL hydrochloric acid sample is analyzed for its concentration by titration.Determine the concentration of the sample,given that it requires 21.50 mL of 0.102 M sodium hydroxide solution to neutralize the acid.

When a saturated solution is in equilibrium with undissolved solute:

What volume of hydrogen gas,measured at STP,is produced in the reaction of excess aluminum with 50.0 mL of 0.935 M hydrochloric acid?

1.25 g C₆H₅COOH is dissolved in water and the solution is titrated with 33.5 mL of a solution of NaOH of an unknown concentration.Calculate the normality of the NaOH for the reaction C₆H₅COOH(aq)+ NaOH(aq)→ C₆H₅COONa(aq)+ H₂O( ).

Consider the volumetric flask shown below.The volume of the flask is 1.000 L. Nitric acid is commercially available at a concentration of 15.9 M.What volume of this solution must be diluted to in this flask to prepare a 4.00 M solution?

Determine the decrease in the freezing point of a solution prepared by dissolving 5.02 grams of paradichlorobenzene,C₆H₄Cl₂,in 75.0 grams of naphthalene,C₁₀H₈.K_f for naphthalene is 6.9°C/m.

Potassium hydrogen phthalate is used as a primary standard in finding the concentration of a solution of sodium hydroxide by the reaction KHC₈H₄O₄ + NaOH → NaKC₈H₄O₄ + H₂O.What is the molarity of the base if 32.75 mL is required to titrate 1.732 g of the primary standard?

80.0 grams of potassium sulfate is dissolved in 3.20 × 10² grams of water.Find the percentage concentration by mass.

An unknown substance is known to be a nonelectrolyte,and it dissolves in water.Determine the approximate molar mass of the substance if 37.7 g of the substance dissolved in 1.00 × 10² mL of water has a boiling temperature of 102.73°C.K_b for water is 0.52°C/m.

Dilute laboratory bench reagents are generally 6.0 M.What volume of dilute HCl must be used to prepare 5.00 × 10² mL of 0.25 M HCl?

A pure solvent freezes at 43.4°C.The freezing temperature is 40.7°C when 17.5 g of CO(NH₂)₂ is dissolved in 1.00 × 10² g of the solvent.Calculate the molal freezing point constant of the solvent.

Calculate the normality of a solution made by dissolving 10.0 g of KOH in water to produce 125 mL of solution.

If 45.5 g of BaCl₂ is dissolved in water to produce 2.74 L of solution,what is the molarity of the solution?

If ethane,CH₃CH₃,a gas,is bubbled into methanol,CH₃OH,a liquid,it is logical to expect that this gas:

Matter and Energy

Measurement and Chemical Calculations

Introduction to Gases

Atomic Theory: The Nuclear Model of the Atom

Chemical Nomenclature

Chemical Formula Relationships

Chemical Reactions

Chemical Change

Quantity Relationships in Chemical Reactions

Atomic Theory: The Quantum Model of the Atom

Chemical Bonding

Structure and Shape

The Ideal Gas Law and Its Applications

Gases, Liquids, and Solids

Acidbase Proton Transferreactions

Chemical Equilibrium

Oxidationreduction Electron Transferreactions

Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

Exam 16: Solutions

How many equivalents of sulfuric acid will react with 0.15 eq of barium hydroxide?

You are required to prepare a 3.50% AgNO3 solution,using 5.00 g of silver nitrate.What mass of water will be needed?

Calculate the normality of a potassium hydroxide solution if 27.7 mL of the solution is needed to neutralize 0.477 g of sulfamic acid in the reaction NH2SO3H + KOH → NH2SO3K + H2O.

What is the molal boiling point constant for a solvent that has a boiling point elevation of 2.5°C when 10.0 g of a solute of molar mass 72.0 g/mol is dissolved in 0.314 kg of the solvent?

A 50.0 mL hydrochloric acid sample is analyzed for its concentration by titration.Determine the concentration of the sample,given that it requires 21.50 mL of 0.102 M sodium hydroxide solution to neutralize the acid.

When a saturated solution is in equilibrium with undissolved solute:

What volume of hydrogen gas,measured at STP,is produced in the reaction of excess aluminum with 50.0 mL of 0.935 M hydrochloric acid?

1.25 g C6H5COOH is dissolved in water and the solution is titrated with 33.5 mL of a solution of NaOH of an unknown concentration.Calculate the normality of the NaOH for the reaction C6H5COOH(aq)+ NaOH(aq)→ C6H5COONa(aq)+ H2O( ).

Consider the volumetric flask shown below.The volume of the flask is 1.000 L. Nitric acid is commercially available at a concentration of 15.9 M.What volume of this solution must be diluted to in this flask to prepare a 4.00 M solution?

Determine the decrease in the freezing point of a solution prepared by dissolving 5.02 grams of paradichlorobenzene,C6H4Cl2,in 75.0 grams of naphthalene,C10H8.Kf for naphthalene is 6.9°C/m.

Potassium hydrogen phthalate is used as a primary standard in finding the concentration of a solution of sodium hydroxide by the reaction KHC8H4O4 + NaOH → NaKC8H4O4 + H2O.What is the molarity of the base if 32.75 mL is required to titrate 1.732 g of the primary standard?

80.0 grams of potassium sulfate is dissolved in 3.20 × 102 grams of water.Find the percentage concentration by mass.

An unknown substance is known to be a nonelectrolyte,and it dissolves in water.Determine the approximate molar mass of the substance if 37.7 g of the substance dissolved in 1.00 × 102 mL of water has a boiling temperature of 102.73°C.Kb for water is 0.52°C/m.

Dilute laboratory bench reagents are generally 6.0 M.What volume of dilute HCl must be used to prepare 5.00 × 102 mL of 0.25 M HCl?

A pure solvent freezes at 43.4°C.The freezing temperature is 40.7°C when 17.5 g of CO(NH2)2 is dissolved in 1.00 × 102 g of the solvent.Calculate the molal freezing point constant of the solvent.

Calculate the normality of a solution made by dissolving 10.0 g of KOH in water to produce 125 mL of solution.

If 45.5 g of BaCl2 is dissolved in water to produce 2.74 L of solution,what is the molarity of the solution?

If ethane,CH3CH3,a gas,is bubbled into methanol,CH3OH,a liquid,it is logical to expect that this gas:

Matter and Energy

Measurement and Chemical Calculations

Introduction to Gases

Atomic Theory: The Nuclear Model of the Atom

Chemical Nomenclature

Chemical Formula Relationships

Chemical Reactions

Chemical Change

Quantity Relationships in Chemical Reactions

Atomic Theory: The Quantum Model of the Atom

Chemical Bonding

Structure and Shape

The Ideal Gas Law and Its Applications

Gases, Liquids, and Solids

Acidbase Proton Transferreactions

Chemical Equilibrium

Oxidationreduction Electron Transferreactions

Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

You are required to prepare a 3.50% AgNO₃ solution,using 5.00 g of silver nitrate.What mass of water will be needed?

Calculate the normality of a potassium hydroxide solution if 27.7 mL of the solution is needed to neutralize 0.477 g of sulfamic acid in the reaction NH₂SO₃H + KOH → NH₂SO₃K + H₂O.

1.25 g C₆H₅COOH is dissolved in water and the solution is titrated with 33.5 mL of a solution of NaOH of an unknown concentration.Calculate the normality of the NaOH for the reaction C₆H₅COOH(aq)+ NaOH(aq)→ C₆H₅COONa(aq)+ H₂O( ).

Determine the decrease in the freezing point of a solution prepared by dissolving 5.02 grams of paradichlorobenzene,C₆H₄Cl₂,in 75.0 grams of naphthalene,C₁₀H₈.K_f for naphthalene is 6.9°C/m.

Potassium hydrogen phthalate is used as a primary standard in finding the concentration of a solution of sodium hydroxide by the reaction KHC₈H₄O₄ + NaOH → NaKC₈H₄O₄ + H₂O.What is the molarity of the base if 32.75 mL is required to titrate 1.732 g of the primary standard?

80.0 grams of potassium sulfate is dissolved in 3.20 × 10² grams of water.Find the percentage concentration by mass.

An unknown substance is known to be a nonelectrolyte,and it dissolves in water.Determine the approximate molar mass of the substance if 37.7 g of the substance dissolved in 1.00 × 10² mL of water has a boiling temperature of 102.73°C.K_b for water is 0.52°C/m.

Dilute laboratory bench reagents are generally 6.0 M.What volume of dilute HCl must be used to prepare 5.00 × 10² mL of 0.25 M HCl?

A pure solvent freezes at 43.4°C.The freezing temperature is 40.7°C when 17.5 g of CO(NH₂)₂ is dissolved in 1.00 × 10² g of the solvent.Calculate the molal freezing point constant of the solvent.

If 45.5 g of BaCl₂ is dissolved in water to produce 2.74 L of solution,what is the molarity of the solution?

If ethane,CH₃CH₃,a gas,is bubbled into methanol,CH₃OH,a liquid,it is logical to expect that this gas: