Question 1

Indicate the order of reactivity of the halogens (F2,Cl2,Br2,I2)with water (fastest to slowest).

Accepted Answer

A) F2 > Cl2 > Br2 > I2 
B) Cl2 > Br2 > I2 > F2 
C) Br2 > I2 > F2 > Cl2 
D) I2 > Br2 > Cl2 > F2 
A) F2 > Cl2 > Br2 > I2 
B) Cl2 > Br2 > I2 > F2 
C) Br2 > I2 > F2 > Cl2 
D) I2 > Br2 > Cl2 > F2

Question 2

What is the anhydrous form of nitric acid,HNO3?

Accepted Answer

A) NO 
B) NO2 
C) N2O3 
D) N2O5 
A) NO 
B) NO2 
C) N2O3 
D) N2O5

Question 3

How many grams of KCl(s)are produced from the thermal decomposition of KClO3(s)which produces 25.0 mL of O2(g)at 25°C and 1.00 atm pressure according to the chemical equation shown below?
2 KClO3(s)→ 2 KCl(s)+ 3 O2(g)

Accepted Answer

A) 0)0508 g 
B) 0)0762 g 
C) 0)0835 g 
D) 0)152 g 
A) 0)0508 g 
B) 0)0762 g 
C) 0)0835 g 
D) 0)152 g

Question 4

Anhydrous magnesium sulfate can be used as a drying agent to remove moisture from the atmosphere.If the only product of this reaction is magnesium sulfate heptahydrate,how many grams of water can be removed by 0.500 kg of magnesium sulfate?

Accepted Answer

The answer of Anhydrous magnesium sulfate can be used as...

Question 5

What is the oxidation number of oxygen in KO2?

Accepted Answer

A) 0 
B) -1/2 
C) -1 
D) -2 
A) 0 
B) -1/2 
C) -1 
D) -2

Question 6

When 3.600 grams of anhydrous magnesium chloride were exposed to moist air,water was absorbed by the sample.If the resulting hydrated compound has a mass of 4.962 grams,what is the chemical formula of the hydrate?

Accepted Answer

A) MgCl2∙ H2O 
B) MgCl2∙ 2H2O 
C) MgCl2∙ 3H2O 
D) MgCl2∙ 4H2O 
A) MgCl2∙ H2O 
B) MgCl2∙ 2H2O 
C) MgCl2∙ 3H2O 
D) MgCl2∙ 4H2O

Question 7

Differences in the physical properties of H2O and D2O are due to isotope effects.Which comparison is not correct? Compared to H2O,D2O has a higher

Accepted Answer

A) boiling point. 
B) density. 
C) dissociation constant. 
D) melting point. 
A) boiling point. 
B) density. 
C) dissociation constant. 
D) melting point.

Question 8

The preparation of oxygen by the thermal decomposition of potassium chlorate is shown below.
2 KClO3(s)   
2 KCl(s)+ 3 O2(g)
In this reaction the atom that is reduced is ________,which undergoes an oxidation number change from ________ to ________.

Accepted Answer

Question 9

The strongest homonuclear single bond is

Accepted Answer

A) H-H 
B) C-C 
C) N-N 
D) O-O 
A) H-H 
B) C-C 
C) N-N 
D) O-O

Question 10

A binary compound that forms when potassium reacts with oxygen has the composition 58.96% Na and 41.04% O.What is the formula of one formula unit of this compound?

Accepted Answer

A) Na2O 
B) NaO 
C) NaO2 
D) Na2O2 
A) Na2O 
B) NaO 
C) NaO2 
D) Na2O2

Question 11

Binary hydrides can be classified as covalent,ionic,or metallic.NaH,HCl,and NH3 are classified as ________,________,and ________ binary hydrides,respectively.

Accepted Answer

ionic,cova

Question 12

A reaction occurs when 0.2105 g of CaH2 is dissolved in enough water to make 250 mL of solution.This solution will have a pH = ________.

Accepted Answer

Question 13

When 0.500 grams of CuSO4 ∙ 5H2O is heated at a temperature of 300°C for twenty minutes it loses some water of hydration.If the resulting sample weighs 0.427 grams then what is the formula of the compound?

Accepted Answer

A) CuSO4 ∙ H2O 
B) CuSO4∙ 2H2O 
C) CuSO4∙ 3H2O 
D) CuSO4∙ 4H2O 
A) CuSO4 ∙ H2O 
B) CuSO4∙ 2H2O 
C) CuSO4∙ 3H2O 
D) CuSO4∙ 4H2O

Question 14

An element that forms a basic oxide tends to form a hydride that is ________ (covalent,ionic).

Accepted Answer

The answer of An element that forms a basic oxide...

Question 15

The first step in the steam-hydrocarbon re-forming process is shown below.
H2O(g)+ CH4(g)→ CO(g)+ 3 H2(g
What is the change in oxidation number of the atom undergoing oxidation in this reaction?

Accepted Answer

A) - 2 
B) + 1 
C) + 2 
D) + 6 
A) - 2 
B) + 1 
C) + 2 
D) + 6

Question 16

Which is an ionic binary hydride?

Accepted Answer

A) HCl 
B) KH 
C) both HCl and KH 
D) neither HCl nor KH 
A) HCl 
B) KH 
C) both HCl and KH 
D) neither HCl nor KH

Question 17

In the picture representing binary hydride AHx,lightly-shaded spheres represent H atoms or ions and darkly-shaded spheres represent atoms or ions of the other element,A.The oxidation state of hydrogen and the oxidation state of element A in the binary hydride shown below are

Accepted Answer

A) +1 and -3. 
B) +1 and -1. 
C) -1 and +1. 
D) -1 and +3. 
A) +1 and -3. 
B) +1 and -1. 
C) -1 and +1. 
D) -1 and +3.

Question 18

The strongest force that must be overcome in order to melt LiH,SiH4,H2S,and HF is ________,________,________,and ________,respectively.

Accepted Answer

ionic bonding,London

Question 19

At 25°C the dissociation constant Kw for T2O is 0.06 × 10-14.What is the molar concentration of OT- in 0.025 M TCl?

Accepted Answer

Question 20

Binary oxides can be classified as acidic,amphoteric,or basic.MgO,Al2O3,and SO3 are classified as ________,________,and ________ oxides,respectively.

Accepted Answer

basic,amph

Exam 18: Hydrogen, oxygen, and Water

Indicate the order of reactivity of the halogens (F2,Cl2,Br2,I2)with water (fastest to slowest).

What is the anhydrous form of nitric acid,HNO3?

How many grams of KCl(s)are produced from the thermal decomposition of KClO3(s)which produces 25.0 mL of O2(g)at 25°C and 1.00 atm pressure according to the chemical equation shown below? 2 KClO3(s)→ 2 KCl(s)+ 3 O2(g)

Anhydrous magnesium sulfate can be used as a drying agent to remove moisture from the atmosphere.If the only product of this reaction is magnesium sulfate heptahydrate,how many grams of water can be removed by 0.500 kg of magnesium sulfate?

What is the oxidation number of oxygen in KO2?

When 3.600 grams of anhydrous magnesium chloride were exposed to moist air,water was absorbed by the sample.If the resulting hydrated compound has a mass of 4.962 grams,what is the chemical formula of the hydrate?

Differences in the physical properties of H2O and D2O are due to isotope effects.Which comparison is not correct? Compared to H2O,D2O has a higher

The preparation of oxygen by the thermal decomposition of potassium chlorate is shown below. 2 KClO3(s) 2 KCl(s)+ 3 O2(g) In this reaction the atom that is reduced is ________,which undergoes an oxidation number change from ________ to ________.

The strongest homonuclear single bond is

A binary compound that forms when potassium reacts with oxygen has the composition 58.96% Na and 41.04% O.What is the formula of one formula unit of this compound?

Binary hydrides can be classified as covalent,ionic,or metallic.NaH,HCl,and NH3 are classified as ________,________,and ________ binary hydrides,respectively.

A reaction occurs when 0.2105 g of CaH2 is dissolved in enough water to make 250 mL of solution.This solution will have a pH = ________.

When 0.500 grams of CuSO4 ∙ 5H2O is heated at a temperature of 300°C for twenty minutes it loses some water of hydration.If the resulting sample weighs 0.427 grams then what is the formula of the compound?

An element that forms a basic oxide tends to form a hydride that is ________ (covalent,ionic).

The first step in the steam-hydrocarbon re-forming process is shown below. H2O(g)+ CH4(g)→ CO(g)+ 3 H2(g What is the change in oxidation number of the atom undergoing oxidation in this reaction?

Which is an ionic binary hydride?

In the picture representing binary hydride AHx,lightly-shaded spheres represent H atoms or ions and darkly-shaded spheres represent atoms or ions of the other element,A.The oxidation state of hydrogen and the oxidation state of element A in the binary hydride shown below are

The strongest force that must be overcome in order to melt LiH,SiH4,H2S,and HF is ________,________,________,and ________,respectively.

At 25°C the dissociation constant Kw for T2O is 0.06 × 10-14.What is the molar concentration of OT- in 0.025 M TCl?

Binary oxides can be classified as acidic,amphoteric,or basic.MgO,Al2O3,and SO3 are classified as ________,________,and ________ oxides,respectively.

Chemistry: Matter and Measurement

Atoms, molecules, and Ions

Formulas, equations, and Moles

Reactions in Aqueous Solutions

Periodicity and the Atomic Structure of Atoms

Ionic Bonds and Some Main-Group Chemistry

Covalent Bonds and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids,solids,and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

The Main-Group Elements

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

Nuclear Chemistry

Organic and Biological Chemistry

Filters

Indicate the order of reactivity of the halogens (F₂,Cl₂,Br₂,I₂)with water (fastest to slowest).

What is the anhydrous form of nitric acid,HNO₃?

How many grams of KCl(s)are produced from the thermal decomposition of KClO₃(s)which produces 25.0 mL of O₂(g)at 25°C and 1.00 atm pressure according to the chemical equation shown below? 2 KClO₃(s)→ 2 KCl(s)+ 3 O₂(g)

What is the oxidation number of oxygen in KO₂?

Differences in the physical properties of H₂O and D₂O are due to isotope effects.Which comparison is not correct? Compared to H₂O,D₂O has a higher

The preparation of oxygen by the thermal decomposition of potassium chlorate is shown below. 2 KClO₃(s) 2 KCl(s)+ 3 O₂(g) In this reaction the atom that is reduced is ,which undergoes an oxidation number change from to .

Binary hydrides can be classified as covalent,ionic,or metallic.NaH,HCl,and NH₃ are classified as ,,and binary hydrides,respectively.

A reaction occurs when 0.2105 g of CaH₂ is dissolved in enough water to make 250 mL of solution.This solution will have a pH = ________.

When 0.500 grams of CuSO₄ ∙ 5H₂O is heated at a temperature of 300°C for twenty minutes it loses some water of hydration.If the resulting sample weighs 0.427 grams then what is the formula of the compound?

The first step in the steam-hydrocarbon re-forming process is shown below. H₂O(g)+ CH₄(g)→ CO(g)+ 3 H₂(g What is the change in oxidation number of the atom undergoing oxidation in this reaction?

In the picture representing binary hydride AH_x,lightly-shaded spheres represent H atoms or ions and darkly-shaded spheres represent atoms or ions of the other element,A.The oxidation state of hydrogen and the oxidation state of element A in the binary hydride shown below are

The strongest force that must be overcome in order to melt LiH,SiH₄,H₂S,and HF is ,,,and ,respectively.

At 25°C the dissociation constant K_w for T₂O is 0.06 × 10^-14.What is the molar concentration of OT^- in 0.025 M TCl?

Binary oxides can be classified as acidic,amphoteric,or basic.MgO,Al₂O₃,and SO₃ are classified as ,,and oxides,respectively.