Problem: When 85.0 g of CH4 are mixed with 16.0 g of O2 the limiting reactant isCH4 + 2 O2 → CO2 + 2 H2OA) CH4.B) O2.C) CO2.D) H2O.

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We’re being asked to determine the limiting reactant in the following reaction:

CH4 + 2 O2 → CO2 + 2 H2O   (the reaction is balanced)


To determine the limiting reactant, we need to determine which is the reactant that forms the less amount of product

This is because once the limiting reactant is all used up, the reaction can no longer proceed and make more products. This means the limiting reactant determines the maximum mass of the product (CO2) formed.

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Problem Details

When 85.0 g of CH4 are mixed with 16.0 g of O2 the limiting reactant is

CH4 + 2 O2 → CO2 + 2 H2O

A) CH4.

B) O2.

C) CO2.

D) H2O.

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.