Based on the balanced chemical equation shown below,determine the mass percent of Fe3+ in a 0.7450g Sample of iron ore if 22.40 mL of a 0.1000 mol L-1 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)

A) 5.365% B) 8.396% C) 16.79% D) 33.58% A) 5.365% B) 8.396% C) 16.79% D) 33.58%

The substance HNO2 is a:

A) strong base B) strong acid C) weak acid D) weak base E) salt A) strong base B) strong acid C) weak acid D) weak base E) salt

Balance the following equation in basic solution: Al(s)+ O2(g)→ [Al(OH)4]-(aq) The sum of the coefficients is ________.

A) 6 B) 12 C) 21 D) 25 E) 33 A) 6 B) 12 C) 21 D) 25 E) 33

The substance CH3COOH in water is a:

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

Exam 5: Introduction to Reactions in Aqueous Solutions

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Based on the balanced chemical equation shown below,determine the mass percent of Fe³⁺ in a 0.7450g Sample of iron ore if 22.40 mL of a 0.1000 mol L^-1 stannous chloride,SnCl₂(aq),solution is required to completely react with theFe³⁺ present in the ore sample.The chemical equation for the reaction is 2 Fe³⁺(aq)+ Sn²⁺(aq)→ 2 Fe²⁺(aq)+ Sn⁴⁺(aq)

(Multiple Choice)

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Question 21

For redox reactions to be balanced,electrons should be present on the reactant side.

(True/False)

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Question 22

The substance HNO₂ is a:

(Multiple Choice)

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Question 23

Which of the following combinations is correct?

(Multiple Choice)

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Question 24

Which of the following reactions is an oxidation-reduction reaction?

(Multiple Choice)

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Question 25

What is the concentration of Br^-(aq)in a solution prepared by mixing 75.0 mL of 0.62 M iron(III)bromide with 75.0 mL of water? Assume that the volumes of the solutions are additive.

(Multiple Choice)

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Question 26

Indicate whether a precipitate forms by completing equation Ag⁺(aq)+ Br^-(aq)+ NO₃^-(aq)+ K⁺(aq)→ ?

(Multiple Choice)

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Question 27

Based on the balanced chemical equation shown below,determine the molarity of a solution containing Fe²⁺(aq)if 40.00 mL of the Fe²⁺(aq)solution is required to completely react with 30.00 mL of a 0.250 mol L^-1 potassium bromate,KBrO₃(aq),solution.The chemical equation for the reaction is 6 Fe²⁺(aq)+ BrO₃^-(aq)+ 6 H⁺(aq)→ 6 Fe³⁺(aq)+ Br^-(aq)+ 3 H₂O(l)

(Multiple Choice)

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Question 28

Balance the following equation in basic solution: Al(s)+ O₂(g)→ [Al(OH)₄]^-(aq) The sum of the coefficients is ________.

(Multiple Choice)

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Question 29

A titration is a method of adding small amounts of one reactant until the reaction is complete.

(True/False)

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Question 30

In 0.20 M NH₃(aq),the concentration of NH₄⁺(aq)and OH^-(aq)are approximately 0.20 M.

(True/False)

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Question 31

An oxidizing agent is reduced during a redox reaction.

(True/False)

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Question 32

In a solution that is 0.50 M CH₃COOH(aq)(acetic acid),the species with a concentration of approximately 0.50 M is ________.

(Multiple Choice)

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Question 33

Choose the INCORRECT statement.

(Multiple Choice)

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Question 34

A solid forming from a mixture of solutions is called a precipitate.

(True/False)

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Question 35

The substance CH₃COOH in water is a:

(Multiple Choice)

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Question 36

The substance HI is a:

(Multiple Choice)

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Question 37

Which one of the following compounds is insoluble in water?

(Multiple Choice)

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Question 38

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 0.200 mol L^-1 thiosulfate solution,K₂S₂O₃(aq)? The chemical equation for the reaction is 2 S₂O₃^2-(aq)+ I₃^-(aq)→ S₄O₆^2-(aq)+ 3 I^-(aq)

(Multiple Choice)

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Question 39

Which statement below best describes net ionic equations?

(Multiple Choice)

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Question 40

Showing 21 - 40 of 124

Exam 5: Introduction to Reactions in Aqueous Solutions

For redox reactions to be balanced,electrons should be present on the reactant side.

The substance HNO2 is a:

Which of the following combinations is correct?

Which of the following reactions is an oxidation-reduction reaction?

What is the concentration of Br-(aq)in a solution prepared by mixing 75.0 mL of 0.62 M iron(III)bromide with 75.0 mL of water? Assume that the volumes of the solutions are additive.

Indicate whether a precipitate forms by completing equation Ag+(aq)+ Br-(aq)+ NO3-(aq)+ K+(aq)→ ?

Balance the following equation in basic solution: Al(s)+ O2(g)→ [Al(OH)4]-(aq) The sum of the coefficients is ________.

A titration is a method of adding small amounts of one reactant until the reaction is complete.

In 0.20 M NH3(aq),the concentration of NH4+(aq)and OH-(aq)are approximately 0.20 M.

An oxidizing agent is reduced during a redox reaction.

In a solution that is 0.50 M CH3COOH(aq)(acetic acid),the species with a concentration of approximately 0.50 M is ________.

Choose the INCORRECT statement.

A solid forming from a mixture of solutions is called a precipitate.

The substance CH3COOH in water is a:

The substance HI is a:

Which one of the following compounds is insoluble in water?

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 0.200 mol L-1 thiosulfate solution,K2S2O3(aq)? The chemical equation for the reaction is 2 S2O32-(aq)+ I3-(aq)→ S4O62-(aq)+ 3 I-(aq)

Which statement below best describes net ionic equations?

Matter: Its Properties and Measurement

Atoms and the Atomic Theory

Chemical Compounds

Chemical Reactions

Gases

Thermochemistry

Electrons in Atoms

The Periodic Table and Some Atomic Properties

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Valence Bond and Molecular Orbital Theories

Intermolecular Forces: Liquids and Solids

Spontaneous Change: Entropy and Gibbs Energy

Solutions and Their Physical Properties

Principles of Chemical Equilibrium

Acids and Bases

Additional Aspects of Acidbase Equilibria

Solubility and Complex-Ion Equilibria

Electrochemistry

Chemical Kinetics

Chemistry of the Main-Group Elements I: Groups 1,2,13,and 14

Chemistry of the Main-Group Elements Ii: Groups 18,17,16,15,and Hydrogen

The Transition Elements

Complex Ions and Coordination Compounds

Nuclear Chemistry

Structures of Organic Compounds

Reactions of Organic Compounds

Chemistry of the Living State

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The substance HNO₂ is a:

What is the concentration of Br^-(aq)in a solution prepared by mixing 75.0 mL of 0.62 M iron(III)bromide with 75.0 mL of water? Assume that the volumes of the solutions are additive.

Indicate whether a precipitate forms by completing equation Ag⁺(aq)+ Br^-(aq)+ NO₃^-(aq)+ K⁺(aq)→ ?

Balance the following equation in basic solution: Al(s)+ O₂(g)→ [Al(OH)₄]^-(aq) The sum of the coefficients is ________.

In 0.20 M NH₃(aq),the concentration of NH₄⁺(aq)and OH^-(aq)are approximately 0.20 M.

In a solution that is 0.50 M CH₃COOH(aq)(acetic acid),the species with a concentration of approximately 0.50 M is ________.

The substance CH₃COOH in water is a:

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 0.200 mol L^-1 thiosulfate solution,K₂S₂O₃(aq)? The chemical equation for the reaction is 2 S₂O₃^2-(aq)+ I₃^-(aq)→ S₄O₆^2-(aq)+ 3 I^-(aq)