Chapter 22 Practice Test Flashcards Preview

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Flashcards in Chapter 22 Practice Test Deck (25)
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1
Q

In which of the following compounds would you expect to find only polar covalent bonds?

A

PBr3

2
Q

Complete the following analogy:

Ammonia : phosphine :: methane : _________________

A

Silane

3
Q

Which of these compounds contains only sigma (σ) bonds?

A

S8

4
Q

Which reaction shows how hydrogen is formed in the water-gas shift reaction?

A

CO + H2O -> CO2 + H2

5
Q

Which is not a binary hydride?

A

OH −

6
Q

What is the product of the Haber-Bosch process?

A

NH3(g)

7
Q

What is the common name of the carbonate salt, Na2CO3?

A

Washing soda

8
Q

Which of the following is not an allotrope of carbon?

A

Cyanide

9
Q

How many carbon atoms comprise a buckminsterfullerene?

A

60

10
Q

Which percentage of the mass of the earth’s crust is composed of silicon?

A

27.7%

11
Q

Which percentage of the mass of the earth’s crust is composed of oxygen?

A

46.4%

12
Q

Identify and arrange in the correct order the steps involved in the process of producing nitric acid using the Ostwald method.

1. 2NO + O2	 → 	2NO2
2. 4NH3 + 5O2	 → 	4NO + 6H2O
3. 3NO2 + 3H2O	 → 	2HNO3 + NO
4. NH3 + 2O2	 → 	HNO3 + H2O
A

2, 1, 3

13
Q

Ammonium nitrite decomposes upon heating into nitrogen gas and water. How much nitrogen gas is produced when 3.00 grams of solid ammonium nitrite is heated at 235°C and 1.10 atm?

A

1.78 L

14
Q

Which compound contains phosphorus in the +3 oxidation state?

A

H3PO3

15
Q

Which of the following Group 15 (VA) elements is NEVER found uncombined in nature?

A

P

16
Q

Arrange the following binary oxides in order of increasing covalent character:

Oxides: SO2, MgO, PbO2, and F2O

A

MgO < PbO2 < SO2 < F2O

17
Q

Oxygen typically reacts with nonmetals to form oxides that are acidic in water. Which of the following nonmetal oxides does not act as an acid in water?

A

N2O

18
Q

Nitrogen and oxygen form diatomic molecules. What type of molecules does sulfur usually form?

A

Polyatomic

19
Q

Why does sulfuric acid form both sulfates and bisulfates?

A

The second dissociation of sulfuric acid is not complete.

20
Q

Which halogen is most reactive?

A

Fluorine

21
Q

Which of the following is not a property of the halogens?

A

Valence configuration of ns2np3

22
Q

Although HF is a weak acid, it is commercially important because it is one of very few substances that will react with _____.

A

glass

23
Q

Which is a balanced equation for the production of chlorine gas?

A

2NaCl(aq) + 2H2O(l) → 2NaOH(aq) + H2(g) + Cl2(g)

24
Q

Which of the following is TRUE regarding xenon oxyfluorides?

A

They are unstable

25
Q

What noble gas is produced by alpha decay?

A

Helium

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