% yield and atom economy
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8 Terms
what does percentage yield tell us?
the percentage of the maximum theoretical yield that was obtained
what is the maximum theoretical yield?
the maximum amount of product that could be made assuming that there are no problems
what is actual yield?
the amount of product that is made in an experiment
can’t be larger then the maximum theoretical yield
what is the equation for calculating percentage yield? (using mass)
% yield = mass of product obtained/max theoretical yield x 100
what is the equation for calculating percentage yield? (using moles)
% yield = moles of product produced/maximum theoretical moles of product x 100
what are 3 reasons that the actual yield is less than the maximum theoretical yield?
the reaction may be reversible (so both the forwards and backwards reaction can take place)
some of the product may be lost when separated from reaction mixture
some of the reactants may react in side / other reactions
what does atom economy tell us?
the percentage of the products in a reaction are the desired / useful product
what is the equation for calculating atom economy?
atom economy = mass of wanted product from equation/total mass of products from equation x 100