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

A) K 2CO 3 B) NaI C) KBr D) CH 3OH E) NH 4Cl A) K 2CO 3 B) NaI C) KBr D) CH 3OH E) NH 4Cl

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

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

Select the best statement relating to the following reaction: 2MnO2(s) + KClO3(aq) + 2KOH(aq) → 2KMnO4(aq) + KCl(aq) + H2O(l)

A) Mn in MnO 2 is oxidized. B) O in KClO 3 is the oxidizing agent. C) K in KClO 3 is the reducing agent. D) H in KOH is oxidized. E) Cl in KClO 3 is the reducing agent. A) Mn in MnO 2 is oxidized. B) O in KClO 3 is the oxidizing agent. C) K in KClO 3 is the reducing agent. D) H in KOH is oxidized. E) Cl in KClO 3 is the reducing agent.

Identify all the spectator ions in the following reaction. 2KMnO4(aq) + 10FeSO4(aq) + 8H2SO4(aq) → K2SO4(aq) + 2MnSO4(aq) + 5Fe2(SO4)3(aq) + 8H2O(l)

A) only K + B) only SO 4 2− C) only K + and SO 4 2− D) only K +, SO 4 2−, and Fe 2+ E) only K +, SO 4 2−, Fe 2+, and Mn 2+ A) only K + B) only SO 4 2− C) only K + and SO 4 2− D) only K +, SO 4 2−, and Fe 2+ E) only K +, SO 4 2−, Fe 2+, and Mn 2+

How many milliliters of 1.58 M HCl are needed to react completely with 23.2 g of NaHCO3 (ℳ = 84.02 g/mol)? HCl(aq) + NaHCO3(s) → NaCl(s) + H2O(l) + CO2(g)

A) 638 mL B) 572 mL C) 536 mL D) 276 mL E) 175 mL A) 638 mL B) 572 mL C) 536 mL D) 276 mL E) 175 mL

Exam 4: Three Major Classes of Chemical Reactions

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

(Multiple Choice)

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Question 21

A standard solution of 0.243 M NaOH was used to determine the concentration of a hydrochloric acid solution. If 46.33 mL of NaOH is needed to neutralize 10.00 mL of the acid, what is the molar concentration of the acid?

(Multiple Choice)

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Question 22

Hydrochloric acid is widely used as a laboratory reagent in refining ore for the production of tin and tantalum, and as a catalyst in organic reactions. Calculate the number of moles of HCl in 62.85 mL of 0.453 M hydrochloric acid.

(Multiple Choice)

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Question 23

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

(Multiple Choice)

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Question 24

Select the best statement relating to the following reaction: 2MnO₂(s) + KClO₃(aq) + 2KOH(aq) → 2KMnO₄(aq) + KCl(aq) + H₂O(l)

(Multiple Choice)

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Question 25

Identify all the spectator ions in the following reaction. 2KMnO₄(aq) + 10FeSO₄(aq) + 8H₂SO₄(aq) → K₂SO₄(aq) + 2MnSO₄(aq) + 5Fe₂(SO₄)₃(aq) + 8H₂O(l)

(Multiple Choice)

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Question 26

Select the correct name and chemical formula for the precipitate that forms when the following reactants are mixed. CoSO₄(aq) + (NH₄)₃PO₄(aq) →

(Multiple Choice)

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Question 27

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

(Multiple Choice)

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Question 28

The combustion of an element is always a combination reaction.

(True/False)

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Question 29

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

(True/False)

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Question 30

Sodium hydroxide, also known as caustic soda, is used to neutralize acids and to treat cellulose in making of cellophane. Calculate the number of moles of solute in 1.875 L of 1.356 M NaOH solution.

(Multiple Choice)

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Question 31

Lithium hydroxide is used in alkaline batteries. Calculate the molarity of a solution prepared by dissolving 1.495 moles of LiOH in enough water to give a final volume of 750. mL.

(Multiple Choice)

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Question 32

Sodium chlorate is used as an oxidizer in the manufacture of dyes, explosives, and matches. Calculate the mass of solute needed to prepare 1.575 L of 0.00250 M NaClO₃(ℳ = 106.45 g/mol).

(Multiple Choice)

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Question 33

Select the classification for the following reaction. 2Na(s) + 2H₂O(l) → 2NaOH(aq) + H₂(g)

(Multiple Choice)

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Question 34

Which one of the following is not a redox reaction?

(Multiple Choice)

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Question 35

Sodium tripolyphosphate is used in detergents to make them effective in hard water. Calculate the oxidation number of phosphorus in Na₅P₃O₁₀.

(Multiple Choice)

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Question 36

How many milliliters of 1.58 M HCl are needed to react completely with 23.2 g of NaHCO₃(ℳ = 84.02 g/mol)? HCl(aq) + NaHCO₃(s) → NaCl(s) + H₂O(l) + CO₂(g)

(Multiple Choice)

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Question 37

Predict the product(s) for the following reaction. BaO(s) + CO₂(g) →

(Multiple Choice)

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Question 38

In a redox reaction, the oxidizing agent undergoes loss of electrons.

(True/False)

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Question 39

Vinegar is a solution of acetic acid, CH₃COOH, dissolved in water. A 5.54-g sample of vinegar was neutralized by 30.10 mL of 0.100 M NaOH. What is the percent by weight of acetic acid in the vinegar?

(Multiple Choice)

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Question 40

Showing 21 - 40 of 111

Exam 4: Three Major Classes of Chemical Reactions

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

A standard solution of 0.243 M NaOH was used to determine the concentration of a hydrochloric acid solution. If 46.33 mL of NaOH is needed to neutralize 10.00 mL of the acid, what is the molar concentration of the acid?

Hydrochloric acid is widely used as a laboratory reagent in refining ore for the production of tin and tantalum, and as a catalyst in organic reactions. Calculate the number of moles of HCl in 62.85 mL of 0.453 M hydrochloric acid.

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

Select the best statement relating to the following reaction: 2MnO2(s) + KClO3(aq) + 2KOH(aq) → 2KMnO4(aq) + KCl(aq) + H2O(l)

Identify all the spectator ions in the following reaction. 2KMnO4(aq) + 10FeSO4(aq) + 8H2SO4(aq) → K2SO4(aq) + 2MnSO4(aq) + 5Fe2(SO4)3(aq) + 8H2O(l)

Select the correct name and chemical formula for the precipitate that forms when the following reactants are mixed. CoSO4(aq) + (NH4)3PO4(aq) →

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

The combustion of an element is always a combination reaction.

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

Sodium hydroxide, also known as caustic soda, is used to neutralize acids and to treat cellulose in making of cellophane. Calculate the number of moles of solute in 1.875 L of 1.356 M NaOH solution.

Lithium hydroxide is used in alkaline batteries. Calculate the molarity of a solution prepared by dissolving 1.495 moles of LiOH in enough water to give a final volume of 750. mL.

Sodium chlorate is used as an oxidizer in the manufacture of dyes, explosives, and matches. Calculate the mass of solute needed to prepare 1.575 L of 0.00250 M NaClO3 (ℳ = 106.45 g/mol).

Select the classification for the following reaction. 2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g)

Which one of the following is not a redox reaction?

Sodium tripolyphosphate is used in detergents to make them effective in hard water. Calculate the oxidation number of phosphorus in Na5P3O10.

How many milliliters of 1.58 M HCl are needed to react completely with 23.2 g of NaHCO3 (ℳ = 84.02 g/mol)? HCl(aq) + NaHCO3(s) → NaCl(s) + H2O(l) + CO2(g)

Predict the product(s) for the following reaction. BaO(s) + CO2(g) →

In a redox reaction, the oxidizing agent undergoes loss of electrons.

Vinegar is a solution of acetic acid, CH3COOH, dissolved in water. A 5.54-g sample of vinegar was neutralized by 30.10 mL of 0.100 M NaOH. What is the percent by weight of acetic acid in the vinegar?

Keys to the Study of Chemistry: Definitions, Units, and Problem Solving

The Components of Matter

Stoichiometry of Formulas and Equations

Gases and the Kinetic-Molecular Theory

Thermochemistry: Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

Intermolecular Forces: Liquids, Solids, and Phase Changes

The Properties of Mixtures: Solutions and Colloids

Periodic Patterns in the Main-Group Elements

Organic Compounds and the Atomic Properties of Carbon

Kinetics: Rates and Mechanisms of Chemical Reactions

Equilibrium: the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics: Entropy, Free Energy, and Reaction Direction

Electrochemistry: Chemical Change and Electrical Work

The Elements in Nature and Industry

Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

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

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

Select the best statement relating to the following reaction: 2MnO₂(s) + KClO₃(aq) + 2KOH(aq) → 2KMnO₄(aq) + KCl(aq) + H₂O(l)

Identify all the spectator ions in the following reaction. 2KMnO₄(aq) + 10FeSO₄(aq) + 8H₂SO₄(aq) → K₂SO₄(aq) + 2MnSO₄(aq) + 5Fe₂(SO₄)₃(aq) + 8H₂O(l)

Select the correct name and chemical formula for the precipitate that forms when the following reactants are mixed. CoSO₄(aq) + (NH₄)₃PO₄(aq) →

Sodium chlorate is used as an oxidizer in the manufacture of dyes, explosives, and matches. Calculate the mass of solute needed to prepare 1.575 L of 0.00250 M NaClO₃(ℳ = 106.45 g/mol).

Select the classification for the following reaction. 2Na(s) + 2H₂O(l) → 2NaOH(aq) + H₂(g)

Sodium tripolyphosphate is used in detergents to make them effective in hard water. Calculate the oxidation number of phosphorus in Na₅P₃O₁₀.

How many milliliters of 1.58 M HCl are needed to react completely with 23.2 g of NaHCO₃(ℳ = 84.02 g/mol)? HCl(aq) + NaHCO₃(s) → NaCl(s) + H₂O(l) + CO₂(g)

Predict the product(s) for the following reaction. BaO(s) + CO₂(g) →

Vinegar is a solution of acetic acid, CH₃COOH, dissolved in water. A 5.54-g sample of vinegar was neutralized by 30.10 mL of 0.100 M NaOH. What is the percent by weight of acetic acid in the vinegar?