Determine the percent yield to two decimal places if 5.06 g?
Determine the percent yield to two decimal places if 5.06 g of alum are synthesized using 0.41 g of aluminum. (MM Al = 26.98 g/mol; MM alum = 474.38 g/mol)
- Trevor HLv 74 weeks ago
Wouldn't life be so simple if only subscribers who want help would submit all the data that enables the question to be solved.
After much searching around ( alum is a word that can mean so many things in chemistry) I have concluded that the "alum " produced must be : KAl(SO4)2.12H2O which has molar mass 474.2g/mol according to my calculations
26.98g Al will produce 474.2g alum
0.41 g Al will produce 0.41/26.98*474.38 = 7.21g alum
% yield = 5.76g/ 7.21g * 100%= 79.9% yield.
- davidLv 74 weeks ago
What is Alum? What chem. formula and a balanced eq. for the formation??
Without that 'stuff' you cannot do the problem. === or at least a mole ratio from some table somewhere.