Chapter 12, Problem 4STP

Use the figure below to answer Question 4.

Hydrogen and nitrogen react as shown to formammonia $(N{H}_3)$ . What is true of this reaction?
A. Three ammonia molecules are formed, with zeromolecules remaining.
B. Two ammonia molecules are formed, with twohydrogen molecules remaining.
C. Six ammonia molecules are formed, with zeromolecules remaining.
D. Two ammonia molecules are formed, with twonitrogen molecules remaining.

Interpretation Introduction

Interpretation:

True statement regarding ammonia formation must be selected from the given list.

Concept introduction:

1 mole nitrogen reacts with 3 moles hydrogen to produce 2 moles of ammonia.

Answer to Problem 4STP

Correct answer: Option D is correct.

Explanation of Solution

Reason for correct option: Option D is correct because 1 molecule of nitrogen reacts with 3 molecules of hydrogen to produce 2 molecules of ammonia. Remaining nitrogen molecule will be $=(3-1)=2.$

Conclusion

Reasons for incorrect options: Option A is incorrect as 3 ammonia molecules will not be formed.

Option B is incorrect as no hydrogen molecules will be left.

Option C is incorrect as six ammonia molecules will not be formed.