3.5 The Yield Of A Chemical Reaction Flashcards Preview

GCSE Chemistry 2.3 How Much? > 3.5 The Yield Of A Chemical Reaction > Flashcards

Flashcards in 3.5 The Yield Of A Chemical Reaction Deck (6)
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1
Q

What is meant by the term leverage yield?

A

It compares the amount made with the theoretical amount made

2
Q

How to calculate percentage yield:

A

(Amount of product made / maximum amount of product possible or theoretical amount of product) x 100

3
Q

How to calculate the theoretical amount of product

A
  1. Work out Mr of product
  2. Find the grams of a reactant used
  3. Divide the Mr by the Ar for the product that you know that mass of and multiply by the mass to give you the theoretical % yield of the product
4
Q

Why is it not usual that chemical reactions would collect the theoretical product from an equation? Name 5 reasons

A
  • reaction may not have completed
  • other reactions may happen
  • some product might be lost when it is separated
  • some product might be left in the apparatus
  • it might be a reversible reaction
5
Q

Why is using reactions with high yields more sustainable?

A

They help conserve resources, and reduce waste, and waste little energy and money, reduce pollution, production is more sustainable

6
Q

What is meant by the term yield?

A

How much you actually make