Question

How to solve limiting reagent problems step by step?

Answer 1

Answer:

I hope after reading this you will feel confident , enlightened and happy ;)

Explanation:

Lets start so what is a limiting reagent - it is something which is in limited quantity for a particular reaction let's take the example of habours process i.e formation of NH3 ( Ammonia)

The reaction says -

2 mole of N2 + 3 mole of H2 --> 2 moles of NH3

so we need 2 moles of N2 to react 3 mole of H2 completely so imagine how much N2 will be req to react with 1 mole of H2

If we need 2N2 --------- 3H2

For 1 H2 ------- 2/3 of N2 by unitary method

You can conclude with a short trick that find the thing which is in excess by comparing the stochiometry and the element which is not in excess will be limiting for sure.