2.1.3 Flashcards
(9 cards)
1
Q
What is the equation for moles
A
Mole = mass ÷ mr
2
Q
How do you calculate empirical formula
A
Find mass, Mr
Divide to find moles
Find ratio by dividing by the smallest number
3
Q
How to find number of atoms
A
Moles × 6.02×10²³
4
Q
How do you find volume of a gas at RTP
A
Mol × 24dm³ (24000cm³)
5
Q
What is the equation that links pressure and volume
A
PV = nRT
6
Q
What are the equations for concentration
A
Moles ÷ volume
Mass ÷ volume
7
Q
What is the equation for percentage yield
A
(Actual yield ÷ theoretical yield) × 100
8
Q
What is the equation for atom economy
A
(Mr of desired product ÷ Mr of all products) × 100
9
Q
Why is percentage yield not 100%
A
Reaction mqy reach equilibrium
Reactants may be impure
Side reactions can happen
Products can be lost
