Question 1

Calcium nitrate tetrahydrate dissolves in warm water to the extent of 266 g per 100.cm3.What is the concentration of nitrate ions in this solution?

Accepted Answer

A)  32.4 M
B)  22.5 M
C)  11.3 M
D)  16.2 M
E)  8.10 MF) B) and E)
G) C) and D)

Question 2

Based on the solubility rules,which one of these compounds is soluble in water?

Accepted Answer

A)  Hg2Cl2
B)  Na2S
C)  Ag2CO3
D)  Ag2S
E)  BaCO3F) A) and B)
G) A) and D)

Question 3

Suppose aqueous solutions of silver(I) nitrate and potassium chloride are mixed.Which represents the likely result?

Accepted Answer

A)   
B)   
C)   
D)   E) B) and D)
F) B) and C)

Question 4

Which of the following is soluble in water?

Accepted Answer

A)  AgCl
B)  Rb2CrO4
C)  Hg2I2
D)  CaSO4
E)  PbBr2F) None of the above
G) B) and E)

Question 5

If aqueous solutions of KMnO4,FeSO4 and H2SO4,are mixed,which ions are spectator ions? 2KMnO4(aq) + 10FeSO4(aq) + 8H2SO4(aq) → K2SO4(aq) + 2MnSO4(aq) + 5Fe2(SO4) 3(aq) + 8H2O(l)

Accepted Answer

A)  only K+
B)  only SO42-
C)  only K+ and SO42-
D)  only K+,SO42- ,and Fe2+
E)  only K+,SO42-,Fe2+,and Mn2+F) B) and C)
G) A) and E)

Question 6

Based on the solubility rules,which one of these compounds is soluble in water?

Accepted Answer

A)  AgBr
B)  AgCl
C)  Ag2CO3
D)  AgNO3
E)  Ag2SF) D) and E)
G) None of the above

Question 7

What is the oxidation number of N in N2H4?

Accepted Answer

A)  +4
B)  +2
C)  -2
D)  -4
E)  0F) A) and E)
G) B) and E)

Question 8

What is oxidized in the following reaction? Fe + Ag2O → FeO + 2Ag

Accepted Answer

A)  Ag
B)  Ag2O
C)  Fe
D)  FeO
E)  2AgF) A) and D)
G) B) and D)

Question 9

For the reaction depicted below,if Z represents Zn,which metal could A represent?

Accepted Answer

A)  Al
B)  Na
C)  Pb
D)  Ca
E)  CuF) A) and B)
G) All of the above

Question 10

How many moles of H+(aq) ions are present in 750 mL of 0.65 M hydrochloric acid?

Accepted Answer

A)  1.2 mol
B)  0.98 mol
C)  0.87 mol
D)  0.65 mol
E)  0.49 molF) B) and D)
G) B) and C)

Question 11

Which is present in all aqueous Brønsted acid solutions?

Accepted Answer

A)  H2
B)  H+
C)  OH-
D)  H2SO4
E)  Cl-F) C) and D)
G) A) and B)

Question 12

Identify the oxidizing agent in the chemical reaction 2MnO4- + 5H2SO3→ 2Mn2+ + 5SO42- + 4H+ + 3H2O.

Accepted Answer

A)  MnO4-
B)  H2SO3
C)  Mn2+
D)  SO42-
E)  H+F) A) and B)
G) C) and E)

Question 13

Identify the major ions present in an aqueous HNO3 solution.

Accepted Answer

A)  HN2+,O2-
B)  OH-,NO3-
C)  OH-,NO+
D)  H+,N3-,O2-
E)  H+,NO3-F) None of the above
G) C) and E)

Question 14

A 250-mL sample of 0.0328 M HCl is partially neutralized by the addition of 100.mL of 0.0245 M NaOH.Find the concentration of hydrochloric acid in the resulting solution.

Accepted Answer

A)  0.00700 M
B)  0.0164 M
C)  0.0383 M
D)  0.0230 M
E)  0.0575 MF) B) and C)
G) B) and E)

Question 15

Complete the following reaction and identify the Brønsted base: NaOH(aq) + HCl(aq) →

Accepted Answer

A)  Na(aq) + HOCl(aq) ; NaOH is the base.
B)  NaCl(aq) + OH-(aq) ; HCl is the base.
C)  NaCl(aq) + OH-(aq) ; NaOH is the base.
D)  H2O(l) + NaCl(aq) ; HCl is the base.
E)  NaCl(aq) + H2O(l) ; NaOH is the base.F) None of the above
G) B) and E)

Question 16

What is the reducing agent in the following reaction? Mg + NiO2 + 2H2O → Mg(OH) 2 + Ni(OH) 2

Accepted Answer

A)  Mg
B)  NiO2
C)  H2O
D)  Mg(OH) 2
E)  Ni(OH) 2F) A) and B)
G) A) and C)

Question 17

Which is the net ionic equation for the reaction between aqueous solutions of lithium hydroxide and hydrobromic acid? LiOH(aq) + HBr(aq) → H2O(l) + LiBr(aq)

Accepted Answer

A)  LiOH(aq) → Li+(aq) + OH-(aq) 
B)  HBr(aq) → H+(aq) + Br-(aq) 
C)  H+(aq) + OH-(aq) → H2O(l) 
D)  Li+(aq) + Br-(aq) → LiBr(aq) 
E)  Li+(aq) + OH-(aq) + H+(aq) + Br-(aq) → H2O(l) + LiBr(aq) F) None of the above
G) B) and C)

Question 18

The substance NH3 is considered to be

Accepted Answer

A)  a weak acid.
B)  a weak base.
C)  a strong acid.
D)  a strong base.
E)  neither acidic nor basic.F) A) and B)
G) A) and C)

Question 19

A 50.0 mL sample of 0.436 M NH4NO3 is diluted with water to a total volume of 250.0 mL.What is the ammonium nitrate concentration in the resulting solution?

Accepted Answer

A)  2.18 M
B)  0.523 M
C)  0.349 M
D)  0.174 M
E)  0.0872 MF) A) and E)
G) None of the above

Question 20

The distinguishing characteristic of all nonelectrolyte solutions is that they

Accepted Answer

A)  contain ions.
B)  do not conduct electricity.
C)  react with other solutions.
D)  always contain acids.
E)  conducts heat.F) None of the above
G) B) and E)

Exam 4: Reactions in Aqueous Solutions

A 250-mL sample of 0.0328 M HCl is partially neutralized by the addition of 100.mL of 0.0245 M NaOH.Find the concentration of hydrochloric acid in the resulting solution.

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Identify the oxidizing agent in the chemical reaction 2MnO4- + 5H2SO3→ 2Mn2+ + 5SO42- + 4H+ + 3H2O.

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Based on the solubility rules,which one of these compounds is soluble in water?

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For the reaction depicted below,if Z represents Zn,which metal could A represent?

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Which is present in all aqueous Brønsted acid solutions?

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Complete the following reaction and identify the Brønsted base: NaOH(aq) + HCl(aq) →

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If aqueous solutions of KMnO4,FeSO4 and H2SO4,are mixed,which ions are spectator ions? 2KMnO4(aq) + 10FeSO4(aq) + 8H2SO4(aq) → K2SO4(aq) + 2MnSO4(aq) + 5Fe2(SO4) 3(aq) + 8H2O(l)

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Calcium nitrate tetrahydrate dissolves in warm water to the extent of 266 g per 100.cm3.What is the concentration of nitrate ions in this solution?

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The substance NH3 is considered to be

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The distinguishing characteristic of all nonelectrolyte solutions is that they

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What is the oxidation number of N in N2H4?

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Identify the major ions present in an aqueous HNO3 solution.

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Based on the solubility rules,which one of these compounds is soluble in water?

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Suppose aqueous solutions of silver(I) nitrate and potassium chloride are mixed.Which represents the likely result?

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A 50.0 mL sample of 0.436 M NH4NO3 is diluted with water to a total volume of 250.0 mL.What is the ammonium nitrate concentration in the resulting solution?

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What is oxidized in the following reaction? Fe + Ag2O → FeO + 2Ag

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Which of the following is soluble in water?

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Which is the net ionic equation for the reaction between aqueous solutions of lithium hydroxide and hydrobromic acid? LiOH(aq) + HBr(aq) → H2O(l) + LiBr(aq)

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What is the reducing agent in the following reaction? Mg + NiO2 + 2H2O → Mg(OH) 2 + Ni(OH) 2

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How many moles of H+(aq) ions are present in 750 mL of 0.65 M hydrochloric acid?

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Identify the oxidizing agent in the chemical reaction 2MnO₄^- + 5H₂SO₃→ 2Mn²⁺ + 5SO₄^2- + 4H⁺ + 3H₂O.

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If aqueous solutions of KMnO₄,FeSO₄ and H₂SO₄,are mixed,which ions are spectator ions? 2KMnO₄(aq) + 10FeSO₄(aq) + 8H₂SO₄(aq) → K₂SO₄(aq) + 2MnSO₄(aq) + 5Fe₂(SO₄) ₃(aq) + 8H₂O(l)

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Calcium nitrate tetrahydrate dissolves in warm water to the extent of 266 g per 100.cm³.What is the concentration of nitrate ions in this solution?

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The substance NH₃ is considered to be

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What is the oxidation number of N in N₂H₄?

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Identify the major ions present in an aqueous HNO₃ solution.

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A 50.0 mL sample of 0.436 M NH₄NO₃ is diluted with water to a total volume of 250.0 mL.What is the ammonium nitrate concentration in the resulting solution?

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What is oxidized in the following reaction? Fe + Ag₂O → FeO + 2Ag

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Which is the net ionic equation for the reaction between aqueous solutions of lithium hydroxide and hydrobromic acid? LiOH(aq) + HBr(aq) → H₂O(l) + LiBr(aq)

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What is the reducing agent in the following reaction? Mg + NiO₂ + 2H₂O → Mg(OH) ₂ + Ni(OH) ₂

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How many moles of H⁺(aq) ions are present in 750 mL of 0.65 M hydrochloric acid?

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