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yield and atom economy of chemical reactions - Coggle Diagram
yield and atom economy of chemical reactions
PERCENTAGE YIELD
calculations
(mass of actual yield/mass of theoretical yield)
x 100
not always possible to obtain theoretical amount of product
unexpected side reactions
product lost when separated from the reaction mixture
incomplete reaction
reversible reaction
example: the harbour process
ATOM ECONOMY
calculations
(relative formula mass of desired product / sum of relative formula of all masses of reactants) x100
higher atom economy implies a "greener" process
low atom economy produces waste products which needs to be disposed of
Landfill
higher atom economy is better for profits
waste products can be expensive to remove
raw materials need to be brought more regularly for low atom economy
the atom economy is likely to be lower, the more products there are
the measure of amount of reactants which ends up as useful products