Formulas Flashcards
% Yield
% Yield = mass of product actually made x 100
maximum theoretical mass of product
No of particles (atoms, molecules and ions.)
No of particles = number of moles x Avogadro’s constant
Percentage atom economy
Percentage atom economy = Mr of the desired product x 100
Sum of Mr of all reactants
Percentage atom economy definition
The atom economy is a measure of the amount of starting materials that end up as useful products
The volume of one mole of any gas at room temperature
The volume of one mole of any gas at room temperature (200C and pressure (1 atmosphere pressure) is 24 dm3 = 24000cm3.
Gas Volume (dm3)
Gas Volume (dm3)= moles x 24
Concentration of a solution
Concentration of a solution (g/dm3) = mass (g) / volume of solvent (dm3)
% Mass of an element in a compound
Number of atoms of that element / Mr of the compound
Number of moles
Mass in g / Mr
