C5.1 Flashcards
(8 cards)
1
Q
What is yield?
A
Mass of product made
2
Q
What is theoretical yield
A
Maximum mass of product made
3
Q
How do you work out theoretical yield?
A
Mass of limiting reactant
————————————————- X Sum of Mr for products
Sum of Mr for limiting reactant
4
Q
What affects percentage yield?
A
- reactants may react in different way than expected
- reaction may not go to completion
- may lose some of the product when separated to purify
5
Q
What is atom economy?
A
How many atoms in a reactant form from desired product
6
Q
What is reaction pathway?
A
Reaction/ series of reaction to make a particular substance
7
Q
What is a by product?
A
Substance formed in reaction, an addition to desired product
8
Q
State the advantages and disadvantages of a by product
A
Advantages : can be useful and be able to be sold (money). It also increase atom economy.
Disadvantages: can be toxic and little use. Therefore less desirable.
