Question 1

The net ionic equation for the acid-base neutralization reaction between HCl(aq)and NaOH(aq)is: H⁺(aq)+ OH⁻(aq)→ H₂O(l).

Accepted Answer

In an acid-base neutralization reaction, the net ionic equation shows the formation of water from the hydrogen ions (H⁺) from the acid and hydroxide ions (OH⁻) from the base, resulting in H₂O(l).

Question 2

Examine the molecular-level diagram. Is this chemical reaction or a physical change?

Accepted Answer

The answer of Examine the molecular-level diagram. Is this chemical...

Question 3

The molecular-level diagram of an aqueous solution shows a solute which is a nonelectrolyte.

Accepted Answer

If the solute is a nonelectrolyte, it will not dissociate into ions in the solution, and therefore, there will be no presence of ions in the molecular-level diagram.

Question 4

A reaction occurs when a piece of silvery metal is placed in an aqueous solution of hydrochloric acid, HCl(aq). Is the metal zinc or silver? What tool would you use to make a decision?

Accepted Answer

The answer of A reaction occurs when a piece of...

Question 5

When two compounds react to form two new compounds as products, a combustion reaction has occurred.

Accepted Answer

A combustion reaction specifically involves a fuel reacting with oxygen to produce heat and often light, as well as new compounds as products. The statement given is too broad and could apply to many other types of chemical reactions.

Question 6

What is the class of the reaction in question 116?

Accepted Answer

The answer of What is the class of the reaction...

Question 7

The activity series is used to predict if a proposed double-displacement reaction will occur.

Accepted Answer

The activity series is used to predict whether a single displacement reaction will occur, not a double-displacement reaction.

Question 8

When writing a net ionic equation, Cu(s)is the same as Cu²⁺(aq), so if these species appear on opposite sides of the equation, they would be cancelled.

Accepted Answer

Cu(s) and Cu2+(aq) are not the same species and cannot be cancelled. Similarly, S2-(aq) and H2S(aq) are not the same species and cannot be cancelled.

Question 9

Write a complete, balanced equation for the reaction that occurs when aluminum metal reacts with oxygen gas to form aluminum oxide. What are the coefficients in the balanced equation? __Al(s)+ __O₂(g)→ __Al₂O₃(s)

Accepted Answer

The answer of Write a complete, balanced equation for the...

Question 10

Examine the molecular-level diagram. Has a chemical reaction occurred?

Accepted Answer

The answer of Examine the molecular-level diagram. Has a chemical...

Question 11

Balance the skeletal equation given for the reaction of magnesium metal with hydrochloric acid: __Mg(s)+ __HCl(aq)→ __MgCl₂(aq)+ __H₂(g)What are the coefficients in the balanced equation?

Accepted Answer

The answer of Balance the skeletal equation given for the...

Question 12

Examine the photograph. Note any evidence of the occurrence of a chemical reaction.  © McGraw-Hill Education/Stephen Frisch, photographer

Accepted Answer

The answer of Examine the photograph. Note any evidence of...

Question 13

Write a complete, balanced equation for the reaction that occurs when solutions of potassium hydrogen carbonate and hydroiodic acid react to form potassium iodide, water, and carbon dioxide. What are the coefficients in the balanced equation? __KHCO₃(aq)+ __HI(aq)→ __KI(aq)+ __H₂O(l)+ __CO₂(g)

Accepted Answer

The answer of Write a complete, balanced equation for the...

Question 14

What is the class of the reaction in question 112?

Accepted Answer

The answer of What is the class of the reaction...

Question 15

What is the class of the reaction in question 114?

Accepted Answer

The answer of What is the class of the reaction...

Question 16

When aqueous solutions of barium chloride and sodium sulfate are mixed, no reaction will occur.

Accepted Answer

When aqueous solutions of barium chloride and sodium sulfate are mixed, a precipitation reaction occurs, resulting in the formation of solid barium sulfate and aqueous sodium chloride. This can be represented by the balanced chemical equation: BaCl2 + Na2SO4 -> 2NaCl + BaSO4.

Question 17

The molecular-level diagram shows a combination reaction occurring.

Accepted Answer

The diagram shows two reactant molecules combining to form a single product molecule, which is indicative of a combination reaction.

Question 18

Balance the skeletal equation given for the reaction of octane, C₈H₁₈, a component of gasoline with oxygen gas: __C₈H₁₈(l)+ __O₂(g)→ __CO₂(g)+ __H₂O(l)What are the coefficients in the balanced equation?

Accepted Answer

The answer of Balance the skeletal equation given for the...

Question 19

What is the class of the reaction in question 118?

Accepted Answer

The answer of What is the class of the reaction...

Question 20

The compound PbCl₂ would be expected to be water-soluble.

Accepted Answer

The presence of Pb (lead) and Cl (chlorine) in a compound usually makes it water-soluble. However, the presence of ₂ (unknown element) cannot be determined and may affect the solubility properties of the compound. Without more information, it cannot be concluded that PbCl₂ is water-soluble.

Quiz 5: Chemical Reactions and Equations

The net ionic equation for the acid-base neutralization reaction between HCl(aq)and NaOH(aq)is: H⁺(aq)+ OH⁻(aq)→ H₂O(l).

Examine the molecular-level diagram. Is this chemical reaction or a physical change?

The molecular-level diagram of an aqueous solution shows a solute which is a nonelectrolyte.

A reaction occurs when a piece of silvery metal is placed in an aqueous solution of hydrochloric acid, HCl(aq). Is the metal zinc or silver? What tool would you use to make a decision?

When two compounds react to form two new compounds as products, a combustion reaction has occurred.

What is the class of the reaction in question 116?

The activity series is used to predict if a proposed double-displacement reaction will occur.

When writing a net ionic equation, Cu(s)is the same as Cu²⁺(aq), so if these species appear on opposite sides of the equation, they would be cancelled.

Write a complete, balanced equation for the reaction that occurs when aluminum metal reacts with oxygen gas to form aluminum oxide. What are the coefficients in the balanced equation? Al(s)+ O₂(g)→ __Al₂O₃(s)

Examine the molecular-level diagram. Has a chemical reaction occurred?

Balance the skeletal equation given for the reaction of magnesium metal with hydrochloric acid: Mg(s)+ HCl(aq)→ MgCl₂(aq)+ H₂(g)What are the coefficients in the balanced equation?

Examine the photograph. Note any evidence of the occurrence of a chemical reaction. © McGraw-Hill Education/Stephen Frisch, photographer

Write a complete, balanced equation for the reaction that occurs when solutions of potassium hydrogen carbonate and hydroiodic acid react to form potassium iodide, water, and carbon dioxide. What are the coefficients in the balanced equation? KHCO₃(aq)+ HI(aq)→ KI(aq)+ H₂O(l)+ __CO₂(g)

What is the class of the reaction in question 112?

What is the class of the reaction in question 114?

When aqueous solutions of barium chloride and sodium sulfate are mixed, no reaction will occur.

The molecular-level diagram shows a combination reaction occurring.

Balance the skeletal equation given for the reaction of octane, C₈H₁₈, a component of gasoline with oxygen gas: C₈H₁₈(l)+ O₂(g)→ CO₂(g)+ H₂O(l)What are the coefficients in the balanced equation?

What is the class of the reaction in question 118?

The compound PbCl₂ would be expected to be water-soluble.

Quiz 5: Chemical Reactions and Equations

The net ionic equation for the acid-base neutralization reaction between HCl(aq)and NaOH(aq)is: H+(aq)+ OH−(aq)→ H2O(l).

Examine the molecular-level diagram. Is this chemical reaction or a physical change?

The molecular-level diagram of an aqueous solution shows a solute which is a nonelectrolyte.

A reaction occurs when a piece of silvery metal is placed in an aqueous solution of hydrochloric acid, HCl(aq). Is the metal zinc or silver? What tool would you use to make a decision?

When two compounds react to form two new compounds as products, a combustion reaction has occurred.

What is the class of the reaction in question 116?

The activity series is used to predict if a proposed double-displacement reaction will occur.

When writing a net ionic equation, Cu(s)is the same as Cu2+(aq), so if these species appear on opposite sides of the equation, they would be cancelled.

Write a complete, balanced equation for the reaction that occurs when aluminum metal reacts with oxygen gas to form aluminum oxide. What are the coefficients in the balanced equation? __Al(s)+ __O2(g)→ __Al2O3(s)

Examine the molecular-level diagram. Has a chemical reaction occurred?

Balance the skeletal equation given for the reaction of magnesium metal with hydrochloric acid: __Mg(s)+ __HCl(aq)→ __MgCl2(aq)+ __H2(g)What are the coefficients in the balanced equation?

Examine the photograph. Note any evidence of the occurrence of a chemical reaction. © McGraw-Hill Education/Stephen Frisch, photographer

Write a complete, balanced equation for the reaction that occurs when solutions of potassium hydrogen carbonate and hydroiodic acid react to form potassium iodide, water, and carbon dioxide. What are the coefficients in the balanced equation? __KHCO3(aq)+ __HI(aq)→ __KI(aq)+ __H2O(l)+ __CO2(g)

What is the class of the reaction in question 112?

What is the class of the reaction in question 114?

When aqueous solutions of barium chloride and sodium sulfate are mixed, no reaction will occur.

The molecular-level diagram shows a combination reaction occurring.

Balance the skeletal equation given for the reaction of octane, C8H18, a component of gasoline with oxygen gas: __C8H18(l)+ __O2(g)→ __CO2(g)+ __H2O(l)What are the coefficients in the balanced equation?

What is the class of the reaction in question 118?

The compound PbCl2 would be expected to be water-soluble.

The net ionic equation for the acid-base neutralization reaction between HCl(aq)and NaOH(aq)is: H⁺(aq)+ OH⁻(aq)→ H₂O(l).

When writing a net ionic equation, Cu(s)is the same as Cu²⁺(aq), so if these species appear on opposite sides of the equation, they would be cancelled.

Write a complete, balanced equation for the reaction that occurs when aluminum metal reacts with oxygen gas to form aluminum oxide. What are the coefficients in the balanced equation? Al(s)+ O₂(g)→ __Al₂O₃(s)

Balance the skeletal equation given for the reaction of magnesium metal with hydrochloric acid: Mg(s)+ HCl(aq)→ MgCl₂(aq)+ H₂(g)What are the coefficients in the balanced equation?

Write a complete, balanced equation for the reaction that occurs when solutions of potassium hydrogen carbonate and hydroiodic acid react to form potassium iodide, water, and carbon dioxide. What are the coefficients in the balanced equation? KHCO₃(aq)+ HI(aq)→ KI(aq)+ H₂O(l)+ __CO₂(g)

Balance the skeletal equation given for the reaction of octane, C₈H₁₈, a component of gasoline with oxygen gas: C₈H₁₈(l)+ O₂(g)→ CO₂(g)+ H₂O(l)What are the coefficients in the balanced equation?

The compound PbCl₂ would be expected to be water-soluble.