Amount Of Substance Flashcards
1
Q
What is the equation linking moles, mass and Mr?
A
Moles = mass / Mr
2
Q
What is the equation to calculate percentage yield?
A
(Mass of product obtained / theoretical mass) x100
3
Q
What is the equation for atom economy?
A
(Mr of wanted product from the equation/ total mr of products from equation) x100
4
Q
What is the ideal gas equation?
A
Pressure x Volume = number of moles x gas constant x temperature
5
Q
What are the SI units for the ideal gas equation?
A
Pressure = Pa
Volume = m^3
Temperature = K
6
Q
How do you calculate concentration?
A
Conc. = moles / volume
7
Q
Why is atom economy important?
A
A high atom economy means little product is wasted i.e few byproducts , so is more economically viable
8
Q
Why is percentage yield important?
A
Need efficient conversion of reactants to products
