Precentage Yield And Am Economy Flashcards Preview

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

What does 100% yield mean?

A

Means that no product has been lost

2
Q

What does 0% yield mean?

A

Means that no product has been made

3
Q

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

A

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

4
Q

What is atom economy?

A

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

5
Q

What does 100% atom economy mean?

A

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

6
Q

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

A

It means that the more ‘greener’ the process is

7
Q

Equation for percentage yield

A

Percentage yield = actual yield / percentage yield X100

8
Q

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

A
  • reducing the reactants wasted

- reducing cost

9
Q

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

A

To reduce the production of unwanted products

To make the process more sustainable

10
Q

Equation for atom economy

A

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

11
Q

What is percentage yield?

A

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