How do i find the limiting reagent in a lab?

Question

How do i find the limiting reagent in a lab? its for chemistry!

Answer 1

First, you need to have the balanced equation for the reaction you are studying. Then determine the number of moles of each reactant involved. Then you should be able to use the reaction ratios from the equation along with the moles of reactants to be able to tell which one will run out first.

For example, if you have a reaction where:

A + 2 B ---> C

And you have 1 mole of A and 1.5 moles of B. You can easily see that B will run out first and be the limiting reagent, as you would need 2 moles of it to totally react all the A.

Answer 2

Limiting Reagent Lab