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Step 3: Performing Stoichiometric Calculations Based on Limiting Reactant 4 Multiple Choice 1 point Read Step 3 at the left. How to Approach a Limiting Reactant Problem: Step 3: Performing Stoichiometric Calculations Based on Limiting Reactant Consider the balanced equation for the formation of sodium chloride, and assume starting quantities of 0.48 mol Na and 0.36 Once the Limiting Reactant has been determined, it can be used to perform mol Clz multiple useful calculations! 2Na (s) + Cl + 2Nacl(s) Use the molar ratios based on the stoichiometric relationships to calculate values like: Now answer the following questions: Theoretical yield of product(s) How many moles of NaCl would be produced? (This is also called the Amount of the Excess reactant that reacted theoretical yield!) Amount of Excess reactant that remains. As determined from above, the limiting reactant was Na (If you didn't get this, then adjust your answers!). All future theoretical calculations depend Hint. Use the limiting reactant moles and the correct stoichiometric conversion factor to get the moles of product NaCl. on assuming the limiting reactant has reacted to completion. Use the Limiting Reactant's initial quantity to perform stoichiometric calculations! 0.36 mol NaC 0.48 mol NaCI OO You can convert from mol Na to mol NaCl: 0.48molNa x AmolNact 0.72 mol NaC You can also convert moles Na to moles Cla: 0.48molla x 5 Multiple Choice 1 point How many moles of Cly reacts? Notice how each of these has Na, the limiting reactant, at the bottom of the O 0.36 conversion factor in order to convert moles of limiting reactant to moles of 0.18 something else. O 0.24 6 Multiple Choice 1 point How many moles of the excess reagent would remain? Hint: If you know how much Cly had reacted, and how much there was at the start, you can figure out how much is left. (And yes, if you identified Cly as the LR then you were wrong, read the text at the left.) O 0.12 0.24 O 0.36 O 0.18 7 True or False 1 point A Reaction Table, like the one shown here, can be used to determine the limiting reactant problem solved in the previous questions