C3e-percentage Yield And Atom Economy Flashcards Preview

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Flashcards in C3e-percentage Yield And Atom Economy Deck (10)
1

What does 100% yield mean?

No product has been lost

2

What does 0% yield mean?

No product has been made

3

Why could percentage yield of a product be less than 100%?

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

4

What is the formula for percentage yield?

Actual yield/ predicted yield x 100

5

Why does an industrial process want a high percentage yield as possible?

Reducing the reactants wasted
Reducing cost

6

What is atom economy?

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

7

What does 100% atom economy mean?

All atoms in the reactant have been converted to the desired product
The higher the economy the greener the process

8

What is the formula for atom economy?

Mr of desired products/ sum of Mr of all products x100

9

Why does an industrial process want a high atom economy as possible?

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

10

What is percentage yield?

A way of comparing amount of product made to amount expected