Learn how to solve problems like this one with our expert tutor.

Problem: Nitrogen (N2) and hydrogen (H2) react to form ammonia (NH3). Consider the mixture of N2 and H2 shown in the accompanying diagram. The blue spheres represent N, and the white ones represent H.How many N2 molecules are left over?

🤓 Based on our data, we think this question is relevant for Professor Ballester's class at NSU.

FREE Expert Solution

Reaction:    N2 + H2 → NH3 

Balanced Reaction:   N2 + 3 H2 → 2 NH3 

4 N2 and 9 H2 molecules.


Blue spheres represent N (2 blue spheres together = N2):

4 molecules N2


White ones represent H (2 white spheres together = H2):

9 molecules N2


Calculate how much NH3 can be produced by each reactant:

From 4 molecules N2

NH3 molecules=4 N2 molecules×2 NH3 molecules1 N2 molecules

NH3 molecules = 8 molecules


From 9 molecules H2

View Complete Written Solution
Problem Details

Nitrogen (N2) and hydrogen (H2) react to form ammonia (NH3). Consider the mixture of N2 and H2 shown in the accompanying diagram. The blue spheres represent N, and the white ones represent H.

4 N2 and 9 H2 molecules.

How many N2 molecules are left over?

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Limiting Reagent concept. If you need more Limiting Reagent practice, you can also practice Limiting Reagent practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Ballester's class at NSU.