Question 1

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- 
A) HN2+,O2- 
B) OH-,NO3- 
C) OH-,NO+ 
D) H+,N3-,O2- 
E) H+,NO3-

Question 2

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

Question 3

What is the oxidation number of N in N2H4?

Accepted Answer

A) +4 
B) +2 
C) -2 
D) -4 
E) 0 
A) +4 
B) +2 
C) -2 
D) -4 
E) 0

Question 4

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 M 
A) 2.18 M 
B) 0.523 M 
C) 0.349 M 
D) 0.174 M 
E) 0.0872 M

Question 5

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

Question 6

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

Question 7

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) BaCO3 
A) Hg2Cl2 
B) Na2S 
C) Ag2CO3 
D) Ag2S 
E) BaCO3

Question 8

Which is present in all aqueous Brønsted acid solutions?

Accepted Answer

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

Question 9

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) Ag2S 
A) AgBr 
B) AgCl 
C) Ag2CO3 
D) AgNO3 
E) Ag2S

Question 10

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. 
A) contain ions. 
B) do not conduct electricity. 
C) react with other solutions. 
D) always contain acids. 
E) conducts heat.

Question 11

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) 
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)

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

Question 13

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

Question 14

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

Question 15

Which of the following is soluble in water?

Accepted Answer

A) AgCl 
B) Rb2CrO4 
C) Hg2I2 
D) CaSO4 
E) PbBr2 
A) AgCl 
B) Rb2CrO4 
C) Hg2I2 
D) CaSO4 
E) PbBr2

Question 16

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) Cu 
A) Al 
B) Na 
C) Pb 
D) Ca 
E) Cu

Question 17

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

Question 18

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

Accepted Answer

A) Ag 
B) Ag2O 
C) Fe 
D) FeO 
E) 2Ag 
A) Ag 
B) Ag2O 
C) Fe 
D) FeO 
E) 2Ag

Question 19

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. 
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.

Question 20

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

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Exam 4: Reactions in Aqueous Solutions

Identify the major ions present in an aqueous HNO3 solution.

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?

What is the oxidation number of N in N2H4?

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?

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.

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)

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

Which is present in all aqueous Brønsted acid solutions?

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

The distinguishing characteristic of all nonelectrolyte solutions is that they

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)

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

The substance NH3 is considered to be

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

Which of the following is soluble in water?

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

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

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

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

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

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Identify the major ions present in an aqueous HNO₃ solution.

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?

What is the oxidation number of N in N₂H₄?

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?

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)

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)

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

The substance NH₃ is considered to be

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

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

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