Question 1

Write the balanced molecular equation for the reaction between aqueous solutions of lithium phosphate and sodium hydroxide.

Accepted Answer

Li₃PO₄(aq) + 2NaOH(aq) $\rightarrow$Na₃PO₄(aq) + 3LiOH(aq)

Question 2

When a metal and a nonmetal react, the metal ______________ electrons and the nonmetal ______________ electrons.

Accepted Answer

The answer of When a metal and a nonmetal react,...

Question 3

Write the molecular equation, the complete ionic equation, and the net ionic equation for the following reaction: Aqueous solutions of copper(II) nitrate and sodium hydroxide are mixed to form solid copper(II) hydroxide and aqueous sodium nitrate.

Accepted Answer

Cu(NO₃)₂(aq) + 2Na...

Question 4

When a precipitation reaction occurs, the ions that do not form the precipitate

Accepted Answer

A)   evaporate
B)   are cations only
C)   form a second insoluble compound in the solution
D)   are left dissolved in the solution
E)   none of these

Question 5

An aqueous solution of potassium chloride is mixed with an aqueous solution of sodium nitrate. Identify the solid in the balanced equation.

Accepted Answer

A)   KCl
B)   NaNO3
C)   KNO3
D)   NaCl
E)   There is no solid formed when the two solutions are mixed.

Question 6

When solutions of barium hydroxide and sulfuric acid are mixed, the net ionic equation is
Ba2+(aq) + SO42-(aq) $\rightarrow$ BaSO4(s) because only the species involved in making the precipitate are included.

Accepted Answer

A) True 
 B)False

Question 7

Classify the following reaction: 2Mg(s)  + O2(g)   →\rightarrow→  2MgO(s)

Accepted Answer

A)   oxidation-reduction
B)   combustion
C)   synthesis
D)   two of the above
E)   a-c are all correct.

Question 8

An aqueous solution of sodium sulfide is allowed to react with an aqueous solution of barium chloride. The complete ionic equation contains which of the following species (when balanced in standard form) ?

Accepted Answer

A)   2Na+(aq) 
B)   Na+(aq) 
C)   3Ba2+(aq) 
D)   2S2-(aq) 
E)   Cl-(aq)

Question 9

The reaction 2K(s)  + Br2(l)   →\rightarrow→  2KBr(s)  is a(n)  ______________ reaction.

Accepted Answer

A)   precipitation
B)   acid-base
C)   oxidation-reduction
D)   double-displacement
E)   single-replacement

Question 10

Write and balance molecular equations for the following reactions between aqueous solutions. You will need to decide on the formulas and phases of the products in each of the cases.
-An aqueous solution of lead(II) nitrate is mixed with an aqueous solution of potassium chloride.

Accepted Answer

Pb(NO<sub>3</sub>)<s...

Question 11

An aqueous solution of sodium sulfate is allowed to react with an aqueous solution of calcium nitrate. The complete ionic equation contains which of the following species (when balanced in standard form) ?.

Accepted Answer

A)   2Na+(aq) 
B)   2SO42-(aq) 
C)   3Ca2+(aq) 
D)   NO3-(aq) 
E)   K+(aq)  A

Question 12

The factors that most commonly cause chemical reactions to occur are all the following except

Accepted Answer

A)   formation of a solid
B)   formation of a gas
C)   formation of water
D)   transfer of electrons
E)   a decrease in temperature

Question 13

Use the following choices to classify each reaction given below (more than one choice may apply) .

-P4(s)  + 5O2(g)   →\rightarrow→ P4O10(s)

Accepted Answer

A)   oxidation-reduction
B)   acid-base
C)   precipitation

Question 14

The reaction HNO3(aq)  + NaOH(aq)  3(aq)  + NaOH(aq)    H2O(l)  + NaNO3(aq)  is a(n)  ________ reaction. A)  acid-base B)  precipitation C)  oxidation-reduction D)  single replacement E)  none of these" class="answers-bank-image d-inline" rel="preload" > H2O(l)  + NaNO3(aq)  is a(n)  ________ reaction.

Accepted Answer

A)   acid-base
B)   precipitation
C)   oxidation-reduction
D)   single replacement
E)   none of these A

Question 15

An aqueous solution of potassium sulfate is allowed to react with an aqueous solution of lead(II)  nitrate. The net ionic equation contains which of the following species (when balanced in standard form) ?.

Accepted Answer

A)   Pb2+(aq) 
B)   2SO42-(aq) 
C)   2K+(aq) 
D)   NO3-(aq) 
E)   2NO3-(aq)

Question 16

The equation 2C2H6 + 7O2  →\rightarrow→  4CO2 + 6H2O is an oxidation-reduction reaction. and why?

Accepted Answer

A)   True; the carbon is oxidized, and the oxygen is reduced.
B)   True; the carbon is reduced, and the oxygen is oxidized.
C)   True; the carbon is oxidized, and the hydrogen is reduced.
D)   True; the oxygen is reduced, and the hydrogen is oxidized.
E)   False

Question 17

Write and balance molecular equations for the following reactions between aqueous solutions. You will need to decide on the formulas and phases of the products in each of the cases.
-An aqueous solution of calcium nitrate is mixed with an aqueous solution of sodium phosphate.

Accepted Answer

3Ca(NO₃)₂

Question 18

Which of the following statements is not true?

Accepted Answer

A)   When a metal reacts with a nonmetal, an ionic compound is formed.
B)   A metal-nonmetal reaction can always be assumed to be an oxidation-reduction reaction.
C)   Two nonmetals can undergo an oxidation-reduction reaction.
D)   When two nonmetals react, the compound formed is ionic.
E)   A metal-nonmetal reaction involves electron transfer.

Question 19

When the following equation is balanced, what is the coefficient for H2O? Ca(OH) 2(aq)  + H3PO4(aq)   →\rightarrow→ Ca3(PO4) 2(s)  + H2O(l)

Accepted Answer

A)   2
B)   3
C)   4
D)   6
E)   8

Question 20

Use the following choices to classify each reaction given below (more than one choice may apply) .

-Na2SO4(aq)  + Pb(NO3) 2(aq)   →\rightarrow→ PbSO4(s)  + 2NaNO3(aq)

Accepted Answer

A)   oxidation-reduction
B)   acid-base
C)   precipitation

Exam 7: Reactions in Aqueous Solutions

Write the balanced molecular equation for the reaction between aqueous solutions of lithium phosphate and sodium hydroxide.

Correct AnswerverifiedLi3PO4(aq) + 2NaOH(aq) \(\rightarrow\)Na3PO4(aq) + 3LiOH(aq)

When a metal and a nonmetal react, the metal ______________ electrons and the nonmetal ______________ electrons.

Correct AnswerverifiedShow Answer

Write the molecular equation, the complete ionic equation, and the net ionic equation for the following reaction: Aqueous solutions of copper(II) nitrate and sodium hydroxide are mixed to form solid copper(II) hydroxide and aqueous sodium nitrate.

Correct AnswerverifiedCu(NO3)2(aq) + 2Na...View AnswerShow Answer

When a precipitation reaction occurs, the ions that do not form the precipitate

Correct AnswerverifiedShow Answer

An aqueous solution of potassium chloride is mixed with an aqueous solution of sodium nitrate. Identify the solid in the balanced equation.

Correct AnswerverifiedShow Answer

When solutions of barium hydroxide and sulfuric acid are mixed, the net ionic equation is Ba2+(aq) + SO42-(aq) →\rightarrow→ BaSO4(s) because only the species involved in making the precipitate are included.

Correct AnswerverifiedShow Answer

Classify the following reaction: 2Mg(s) + O2(g) →\rightarrow→ 2MgO(s)

Correct AnswerverifiedShow Answer

An aqueous solution of sodium sulfide is allowed to react with an aqueous solution of barium chloride. The complete ionic equation contains which of the following species (when balanced in standard form) ?

Correct AnswerverifiedShow Answer

The reaction 2K(s) + Br2(l) →\rightarrow→ 2KBr(s) is a(n) ______________ reaction.

Correct AnswerverifiedShow Answer

Write and balance molecular equations for the following reactions between aqueous solutions. You will need to decide on the formulas and phases of the products in each of the cases. -An aqueous solution of lead(II) nitrate is mixed with an aqueous solution of potassium chloride.

Correct AnswerverifiedPb(NO3)View AnswerShow Answer

An aqueous solution of sodium sulfate is allowed to react with an aqueous solution of calcium nitrate. The complete ionic equation contains which of the following species (when balanced in standard form) ?.

Correct AnswerverifiedA

The factors that most commonly cause chemical reactions to occur are all the following except

Correct AnswerverifiedShow Answer

Use the following choices to classify each reaction given below (more than one choice may apply) . -P4(s) + 5O2(g) →\rightarrow→ P4O10(s)

Correct AnswerverifiedShow Answer

The reaction HNO3(aq) + NaOH(aq) H2O(l) + NaNO3(aq) is a(n) ________ reaction.

Correct AnswerverifiedA

An aqueous solution of potassium sulfate is allowed to react with an aqueous solution of lead(II) nitrate. The net ionic equation contains which of the following species (when balanced in standard form) ?.

Correct AnswerverifiedShow Answer

The equation 2C2H6 + 7O2 →\rightarrow→ 4CO2 + 6H2O is an oxidation-reduction reaction. and why?

Correct AnswerverifiedShow Answer

Write and balance molecular equations for the following reactions between aqueous solutions. You will need to decide on the formulas and phases of the products in each of the cases. -An aqueous solution of calcium nitrate is mixed with an aqueous solution of sodium phosphate.

Correct Answerverified3Ca(NO3)2View AnswerShow Answer

Which of the following statements is not true?

Correct AnswerverifiedShow Answer

When the following equation is balanced, what is the coefficient for H2O? Ca(OH) 2(aq) + H3PO4(aq) →\rightarrow→ Ca3(PO4) 2(s) + H2O(l)

Correct AnswerverifiedShow Answer

Use the following choices to classify each reaction given below (more than one choice may apply) . -Na2SO4(aq) + Pb(NO3) 2(aq) →\rightarrow→ PbSO4(s) + 2NaNO3(aq)

Correct AnswerverifiedShow Answer

Correct Answer
verified
Li₃PO₄(aq) + 2NaOH(aq) \(\rightarrow\)Na₃PO₄(aq) + 3LiOH(aq)

When a metal and a nonmetal react, the metal electrons and the nonmetal electrons.

Correct Answer
verified

Correct Answer
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Cu(NO₃)₂(aq) + 2Na...
View Answer

Correct Answer
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Correct Answer
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When solutions of barium hydroxide and sulfuric acid are mixed, the net ionic equation is Ba²⁺(aq) + SO₄^2-(aq) $\rightarrow$ BaSO₄(s) because only the species involved in making the precipitate are included.

Correct Answer
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Classify the following reaction: 2Mg(s) + O₂(g) $\rightarrow$ 2MgO(s)

Correct Answer
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Correct Answer
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The reaction 2K(s) + Br₂(l) $\rightarrow$ 2KBr(s) is a(n) ______________ reaction.

Correct Answer
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Correct Answer
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Pb(NO₃)
View Answer

Correct Answer
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A

Correct Answer
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Use the following choices to classify each reaction given below (more than one choice may apply) . -P₄(s) + 5O₂(g) $\rightarrow$ P₄O₁₀(s)

Correct Answer
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The reaction HNO₃(aq) + NaOH(aq) H₂O(l) + NaNO₃(aq) is a(n) ________ reaction.

Correct Answer
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A

Correct Answer
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The equation 2C₂H₆ + 7O₂ $\rightarrow$ 4CO₂ + 6H₂O is an oxidation-reduction reaction. and why?

Correct Answer
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Correct Answer
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3Ca(NO₃)_{2View Answer}

Correct Answer
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When the following equation is balanced, what is the coefficient for H₂O? Ca(OH) ₂(aq) + H₃PO₄(aq) $\rightarrow$ Ca₃(PO₄) ₂(s) + H₂O(l)

Correct Answer
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Use the following choices to classify each reaction given below (more than one choice may apply) . -Na₂SO₄(aq) + Pb(NO₃) ₂(aq) $\rightarrow$ PbSO₄(s) + 2NaNO₃(aq)

Correct Answer
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