24.3.1 Nitrogen

Question 1

Which of the following statements concerning nitrogen is false?

Answer 1

Nitrogen is abundant in the lithosphere.

Question 2

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

Answer 2

2, 1, 3

Question 3

Ammonia (NH3 ) : hydrazine (N2H4 ) ::

methane (CH4 ) : ____________________.

Answer 3

ethane (CH3CH3 )

Question 4

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?

Answer 4

1.78 L

Question 5

Which of the following compounds contains nitrogen in its highest oxidation state?

Answer 5

Dinitrogen pentoxide

Question 6

Which industrial process is used to “activate” nitrogen?

Answer 6

Haber-Bosch process

Question 7

Which of the following nitrogen-containing substances has been used as rocket fuel?

Answer 7

N2H4

Question 8

During the Haber-Bosch process, ammonia must be continuously removed from the reaction chamber in order to facilitate the production of more ammonia. What chemical rule or principle does this illustrate?

Answer 8

Le Châtelier’s principle

Question 9

What is the general term for the removal of elemental nitrogen from the atmosphere?

Answer 9

Nitrogen fixation

Question 10

Which of the following is not a source or method of nitrogen fixation?

Answer 10

The oxidation of hydrazine