Exam 3

Question 1

How to calculate the mass of a product from the mass of a reactant

Answer 1

1. convert mass of reactant into moles of reactant
2. use reaction stoichometry to calculate moles of product 3. convert moles of product into mass of product

Question 2

How to identify the limiting reactant in a reaction mixture

Answer 2

calculate how much product each reactant could make; the reactant making the least amount is the limiting reactant

Question 3

Calculate theoretical yield and percent yield

Answer 3

1. use the quantity of the limiting reactant to calculate the theoretical yield of product
2. divide actual yield (given or measured) by theoretical yield
   percent yield = ( actual yield / theoretical yield ) x 100%