posted by manny .
Can somebody point out the step i have to take to solve this problem. It would be much appreciated. Thanks a lot!!!!
Asprin, C9H8O4, is prepared by reacting salicylic acid, C7H6O3, with acetic anhydride, C4H6O3, in the reaction:
C7H6O3 + C4H6O3 ---> C9H8O4 + C2H4O2
A student is told to prepare 45.0 g asprin. She is also told to use a 55% excess of acetic anydride and to expect to get an 85% yeild in the reaction. How many grams of each reactant should she use?
Balance the equation.
consider a mass of 55(1/.85) g of aspiring as the product, determine the moles of aspirin. Using the coefficents, determine the moles of each reactant, and for the acetic anydride, multiply it by 1.55
wait isn't the equation already balanced?