Chemistry

?
What does atom economy mean?
It is a measure of the amount of starting materials that become useful products
1 of 9
How can the atom economy of a reaction be calculated?
% atom economy = mass of desired product from equation ÷ total mass of products from equation X 100
2 of 9
What is the concentration of a solution measured in?
Moles per cubic decimetre (mol/dm3)
3 of 9
Volumes of gasses at the same temperature & pressure..
Contain the same number of molecules
4 of 9
Ar =
Relative atomic mass
5 of 9
Mr =
Relative molecular mass
6 of 9
CaCo3 - CaO + CO2. If we have 50g of CaCO3, how much CaO can we make?
work out the Mr values for the 2 compounds CaCO3 = 40+12+16+16 + 16 = 100. CaO is 40 + 16 = 56. This means 100g of CaCO3 would yield 56g of CaO. In the Q we are told we only have half that amount of CaCO3 = 50g, so you would halve 56 to ans = 28g
7 of 9
What is yield?
The yield is the actual mass of product made.
8 of 9
The percentage yield can be calculated by..
Percentage yield = actual mass of product obtained ÷ maximum theoretical mass of product X 100
9 of 9

Other cards in this set

Card 2

Front

How can the atom economy of a reaction be calculated?

Back

% atom economy = mass of desired product from equation ÷ total mass of products from equation X 100

Card 3

Front

What is the concentration of a solution measured in?

Back

Preview of the front of card 3

Card 4

Front

Volumes of gasses at the same temperature & pressure..

Back

Preview of the front of card 4

Card 5

Front

Ar =

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Calculations, moles and yield resources »