Question 1

Select the classification for the following reaction.
H2CO3(aq) $\to$ H2O(l)+ CO2(g)

Accepted Answer

A) combination 
B) decomposition 
C) displacement 
D) acid-base 
E) None of these choices is correct. 
A) combination 
B) decomposition 
C) displacement 
D) acid-base 
E) None of these choices is correct.

Question 2

a.You are provided with a 250 mL volumetric flask,deionized water and solid NaOH.How much NaOH should be weighed out in order to make 250.mL of 0.100 M solution?
b.25.0 mL of the 0.100 M aqueous NaOH is titrated against sulfuric acid,H2SO4,according to the equation
2NaOH(aq)+ H2SO4(aq) $\to$ Na2SO4(aq)+ 2H2O(l)
If the volume of sulfuric acid solution required to neutralize the NaOH is 18.62 mL,what is its concentration?

Accepted Answer

The answer of a.You are provided with a 250 mL...

Question 3

Select the classification for the following reaction.
2I-(aq)+ Cl2(aq) $\to$ I2(aq)+ 2Cl-(aq)

Accepted Answer

A) combination 
B) displacement 
C) decomposition 
D) precipitation 
E) acid-base 
A) combination 
B) displacement 
C) decomposition 
D) precipitation 
E) acid-base

Question 4

Select the classification for the following reaction.
Na2O(s)+ H2O(l) $\to$ 2NaOH(aq)

Accepted Answer

A) combination 
B) decomposition 
C) displacement 
D) acid-base 
E) precipitation 
A) combination 
B) decomposition 
C) displacement 
D) acid-base 
E) precipitation

Question 5

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

Accepted Answer

A) precipitation 
B) acid-base 
C) redox 
D) combination 
E) None of these choices is correct. 
A) precipitation 
B) acid-base 
C) redox 
D) combination 
E) None of these choices is correct.

Question 6

Calculate the oxidation number of iodine in I2.

Accepted Answer

A) -1 
B) 0 
C) +1 
D) +7 
E) None of these is the correct oxidation number. 
A) -1 
B) 0 
C) +1 
D) +7 
E) None of these is the correct oxidation number.

Question 7

In an acid-base (neutralization)reaction the equivalence point is the point where the indicator changes color.

Accepted Answer

A) True 
 B)False

Question 8

Some covalent compounds dissolve in water to produce conducting solutions.

Accepted Answer

A) True 
 B)False

Question 9

Predict the product(s)for the following reaction.
BaO(s)+ CO2(g) $\to$

Accepted Answer

A) Ba(s)+ CO3(g) 
B) BaCO3(s) 
C) BaO(s)+ C(s) 
D) Ba(s)+ CO32-(s) 
E) No reaction occurs. 
A) Ba(s)+ CO3(g) 
B) BaCO3(s) 
C) BaO(s)+ C(s) 
D) Ba(s)+ CO32-(s) 
E) No reaction occurs.

Question 10

For each of the following species,write down,next to the formula,the oxidation number of the indicated atom.
a.P in H2PO2-
b.S in Na2S2O3
 c.C in CH2O

Accepted Answer

Question 11

Select the correct set of products for the following reaction.
Ba(OH)2(aq)+ HNO3(aq) $\to$

Accepted Answer

A) BaN2(s)+ H2O(l) 
B) Ba(NO3)2(aq)+ H2O(l) 
C) Ba(s)+ H2(g)+ NO2(g) 
D) Ba2O(s)+ NO2(g)+ H2O(l) 
E) No reaction occurs. 
A) BaN2(s)+ H2O(l) 
B) Ba(NO3)2(aq)+ H2O(l) 
C) Ba(s)+ H2(g)+ NO2(g) 
D) Ba2O(s)+ NO2(g)+ H2O(l) 
E) No reaction occurs.

Question 12

Calculate the oxidation number of the chlorine in perchloric acid,HClO4,a strong oxidizing agent.

Accepted Answer

A) -1 
B) +4 
C) +5 
D) +7 
E) None of these is the correct oxidation number. 
A) -1 
B) +4 
C) +5 
D) +7 
E) None of these is the correct oxidation number.

Question 13

Select the classification for the following reaction.
NH3(aq)+ HNO3(aq) $\to$ NH4NO3(aq)

Accepted Answer

A) precipitation 
B) acid-base 
C) redox 
D) decomposition 
E) None of these choices is correct. 
A) precipitation 
B) acid-base 
C) redox 
D) decomposition 
E) None of these choices is correct.

Question 14

Select the classification for the following reaction.
2Ag+(aq)+ Zn(s) $\to$ 2Ag(s)+ Zn2+(aq)

Accepted Answer

A) displacement 
B) decomposition 
C) combination 
D) precipitation 
E) acid-base 
A) displacement 
B) decomposition 
C) combination 
D) precipitation 
E) acid-base

Question 15

Predict the product(s)for the following reaction.
H2SO4(aq)+ KOH(aq) $\to$

Accepted Answer

A) K2SO4(aq)+ H2O(l) 
B) K2S(aq)+ H2O(l) 
C) K(s)+ H2(g)+ SO3(g) 
D) KSO4(aq)+ H2O(l) 
E) No reaction occurs. 
A) K2SO4(aq)+ H2O(l) 
B) K2S(aq)+ H2O(l) 
C) K(s)+ H2(g)+ SO3(g) 
D) KSO4(aq)+ H2O(l) 
E) No reaction occurs.

Question 16

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

Accepted Answer

A) cobalt(II)phosphate,Co3(PO4)2 
B) cobalt(III)phosphate,Co3(PO4)2 
C) cobalt(II)phosphate,CoPO4 
D) cobalt(III)phosphate,CoPO4 
E) ammonium sulfate, (NH4)2SO4 
A) cobalt(II)phosphate,Co3(PO4)2 
B) cobalt(III)phosphate,Co3(PO4)2 
C) cobalt(II)phosphate,CoPO4 
D) cobalt(III)phosphate,CoPO4 
E) ammonium sulfate, (NH4)2SO4

Question 17

Which one of the following substances is a strong acid?

Accepted Answer

A) HNO3 
B) H2CO3 
C) NH3 
D) CH3COOH 
E) H3PO4 
A) HNO3 
B) H2CO3 
C) NH3 
D) CH3COOH 
E) H3PO4

Question 18

Select the classification for the following reaction.
BaCl2(aq)+ K2SO4(aq) $\to$ BaSO4(s)+ 2KCl(aq)

Accepted Answer

A) precipitation 
B) acid-base 
C) redox 
D) decomposition 
E) None of these choices is correct. 
A) precipitation 
B) acid-base 
C) redox 
D) decomposition 
E) None of these choices is correct.

Question 19

Select the precipitate that forms when aqueous lead(II)nitrate reacts with aqueous sodium sulfate.

Accepted Answer

A) NaNO3 
B) Na2NO3 
C) PbSO4 
D) Pb2SO4 
E) PbS 
A) NaNO3 
B) Na2NO3 
C) PbSO4 
D) Pb2SO4 
E) PbS

Question 20

Select the classification for the following reaction.
Fe2+(aq)+ 2OH-(aq) $\to$ Fe(OH)2(s)

Accepted Answer

A) precipitation 
B) acid-base 
C) redox 
D) decomposition 
E) None of these choices is correct. 
A) precipitation 
B) acid-base 
C) redox 
D) decomposition 
E) None of these choices is correct.

Exam 4: Three Major Classes of Chemical Reactions

Select the classification for the following reaction. H2CO3(aq) →\to→ H2O(l)+ CO2(g)

Select the classification for the following reaction. 2I-(aq)+ Cl2(aq) →\to→ I2(aq)+ 2Cl-(aq)

Select the classification for the following reaction. Na2O(s)+ H2O(l) →\to→ 2NaOH(aq)

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

Calculate the oxidation number of iodine in I2.

In an acid-base (neutralization)reaction the equivalence point is the point where the indicator changes color.

Some covalent compounds dissolve in water to produce conducting solutions.

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

For each of the following species,write down,next to the formula,the oxidation number of the indicated atom. a.P in H2PO2- b.S in Na2S2O3 c.C in CH2O

Select the correct set of products for the following reaction. Ba(OH)2(aq)+ HNO3(aq) →\to→

Calculate the oxidation number of the chlorine in perchloric acid,HClO4,a strong oxidizing agent.

Select the classification for the following reaction. NH3(aq)+ HNO3(aq) →\to→ NH4NO3(aq)

Select the classification for the following reaction. 2Ag+(aq)+ Zn(s) →\to→ 2Ag(s)+ Zn2+(aq)

Predict the product(s)for the following reaction. H2SO4(aq)+ KOH(aq) →\to→

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

Which one of the following substances is a strong acid?

Select the classification for the following reaction. BaCl2(aq)+ K2SO4(aq) →\to→ BaSO4(s)+ 2KCl(aq)

Select the precipitate that forms when aqueous lead(II)nitrate reacts with aqueous sodium sulfate.

Select the classification for the following reaction. Fe2+(aq)+ 2OH-(aq) →\to→ Fe(OH)2(s)

Keys to the Study of Chemistry

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 Solutions

The Main-Group Elements: Applying Principles of Bonding and Structure

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 the Direction of Chemical Reactions

Electrochemistry: Chemical Change and Electrical Work

The Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters

Select the classification for the following reaction. H₂CO₃(aq) $\to$ H₂O(l)+ CO₂(g)

Select the classification for the following reaction. 2I^-(aq)+ Cl₂(aq) $\to$ I₂(aq)+ 2Cl^-(aq)

Select the classification for the following reaction. Na₂O(s)+ H₂O(l) $\to$ 2NaOH(aq)

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

Calculate the oxidation number of iodine in I₂.

Predict the product(s)for the following reaction. BaO(s)+ CO₂(g) $\to$

For each of the following species,write down,next to the formula,the oxidation number of the indicated atom. a.P in H₂PO₂^- b.S in Na₂S₂O₃ c.C in CH₂O

Select the correct set of products for the following reaction. Ba(OH)₂(aq)+ HNO₃(aq) $\to$

Calculate the oxidation number of the chlorine in perchloric acid,HClO₄,a strong oxidizing agent.

Select the classification for the following reaction. NH₃(aq)+ HNO₃(aq) $\to$ NH₄NO₃(aq)

Select the classification for the following reaction. 2Ag⁺(aq)+ Zn(s) $\to$ 2Ag(s)+ Zn²⁺(aq)

Predict the product(s)for the following reaction. H₂SO₄(aq)+ KOH(aq) $\to$

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

Select the classification for the following reaction. BaCl₂(aq)+ K₂SO₄(aq) $\to$ BaSO₄(s)+ 2KCl(aq)

Select the classification for the following reaction. Fe²⁺(aq)+ 2OH^-(aq) $\to$ Fe(OH)₂(s)