CK-12 Chemistry by CK-12 Foundation

Author:CK-12 Foundation
Language: eng
Format: azw, mobi
Publisher: CK-12 Foundation
Published: 2010-09-09T16:00:00+00:00

Step 2: Determine the moles of that are required to consume all of the .

mols FeS required to react with all of the

Step 3: Compare moles of found in step 2 with actual amount given in step 1. If the amount in step is greater than in step 1, is limiting reagent. If the amount in step is less than in step 1, is in excess.

We know that we have (Step 1)

We know that we need (Step 2) to use up all of the .

Therefore step 2 > step1, and is the limiting reagent. This means that is the species in excess.

Let’s try another one:

A student mixed of carbon with iron (III) oxide. What is the limiting reactant and what reactant was in excess? The reaction she used is below:

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