Limiting Reactants

Question 1

What is a limiting reactant

Answer 1

A reactant that gets completely used up in a reaction before the rest, then the reaction will stop
Limits the amount of product that’s formed

Question 2

What happens to the reaction when one of the reactants are used up

Answer 2

It stops

Question 3

What is the relationship between the amount of product formed to the amount of limiting reactant

Answer 3

Directly proportional

If you halve the amount of limiting reactant, the amount of product formed will also halve

Question 4

How can you work out the mass of a product formed in a reaction

Answer 4

By using he mass of the limiting reactant and the balanced equation

1. Write the balanced equation
2. Work out the sum of RFM of the reactant and product
3. Use the balanced equation to work out how many moles there’ll be of the other substance, that’s how many moles of product will be made of that many reactant
4. Use the number of moles to calculate the mass