Tutored Practice Problem 3.4.2 COUNTS TOWARDS GRADE Close Problem Identify limiting reactants (maximum product method). Consider the reaction of sodium with carbon and ammonia. 2Na (s) + 2C (s) + 2NH3 (g) >2NaCN (s) + 3H2 (g) Determine the limiting reactant in a mixture containing 115 g of Na, 71.5 g of C, and 71.6 g of NH3. Calculate the maximum mass (in grams) of sodium cyanide, NaCN, that can be produced in the reaction. . The limiting reactant is: NH3 Na OC Amount of NaCN formed = g