Precentage Yield And Am Economy Flashcards Preview

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Flashcards in Precentage Yield And Am Economy Deck (11):
1

What does 100% yield mean?

Means that no product has been lost

2

What does 0% yield mean?

Means that no product has been made

3

Recognise possible reasons why the percentage yield of a product is less than 100%

Loss in filtration
Loss in evaporation
Loss in transferring liquids
Not all reactants react to make product

4

What is atom economy?

A way of measuring the amount of atoms that are wasted when manufacturing a chemical

5

What does 100% atom economy mean?

Means that all atoms in the reactant have been converted to the desired product

6

What does it mean if you have a high atom economy?

It means that the more 'greener' the process is

7

Equation for percentage yield

Percentage yield = actual yield / percentage yield X100

8

Explain why an individual process wants as high as percentage yield as possible?

- reducing the reactants wasted
- reducing cost

9

Explain why an industrial process wants as high an atom economy as possible

To reduce the production of unwanted products
To make the process more sustainable

10

Equation for atom economy

Atom economy = Mr of desired products / sum of Mr of all products X100

11

What is percentage yield?

A way of comparing amount of product made (actual yield) to amount expected (predicted yield)