Problem: Nitrogen and hydrogen gas react to form ammonia according to the reaction:N2(g) + 3H2(g) → 2NH3(g)If a flask contains a mixture of reactants represented by the image at the far left, which image below best represents the mixture in the flask after the reactants have reacted as completely as possible?

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We’re being asked to determine the image that represents that product that will be formed in the reaction


The given balanced reaction is:


N2(g) + 3H2(g) → 2 NH3(g)


This equation is already balanced. 


To solve this problem, we need to:

Step 1. Determine the limiting reagent and the mole of NH3 produced.
Step 2. Determine the excess reagent remaining.


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Problem Details
Nitrogen and hydrogen gas react to form ammonia according to the reaction:

N2(g) + 3H2(g) → 2NH3(g)

A flask containing two N2 molecules, each depicted as two blue spheres combined, and eight H2 molecules, each depicted as two smaller white spheres combined.

If a flask contains a mixture of reactants represented by the image at the far left, which image below best represents the mixture in the flask after the reactants have reacted as completely as possible?

Three flasks: a, b, and c. Flask a contains two NH3 molecules, each depicted as a blue sphere combined with three smaller white spheres, and also contains one N2 molecule, depicted as two blue spheres combined, and five H2 molecules, each depicted as two smaller white spheres combined. Flask b contains four NH3 molecules, each depicted as a blue sphere combined with three smaller white spheres. Flask c contains four  NH3 molecules, each depicted as a blue sphere combined with three smaller white spheres as well as two H2 molecules, each depicted as two smaller white spheres combined.


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. You can view video lessons to learn Limiting Reagent. Or 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 Vagle's class at VALENCIA.