Warm-Up If 5.3 mol of calcium reacts with 3.8 mol of aluminum chloride, determine which reactant is limiting and how many moles of product can be made.

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Presentation transcript:

Warm-Up If 5.3 mol of calcium reacts with 3.8 mol of aluminum chloride, determine which reactant is limiting and how many moles of product can be made 3 Ca (s) + 2 AlCl 3(aq)  3 CaCl 2(aq) + 2 Al (s) Recall: The limiting reagent is the one that runs out first

Stoichiometry & Limiting Reagents LG: I can determine the limiting reagent in a chemical reaction and use this to make predictions about the products

Predicting Quantities of Products If you know the masses of reactants you are working with, you must first determine which reagent is limiting before making predictions about the products – Convert all quantities to moles – Use mole ratio to determine which reagent will run out first Remember: Predictions based on chemical equations are only theoretical.

Example 1 If 25g of K is reacted with 45g of CaCl 2 find the theoretical yield of KCl that can be produced

Example g of copper is added to a solution containing 20.0g of silver nitrate. a)Will a reaction occur? How do you know? b)Determine the theoretical mass of silver produced.

Homework Pg. 335 # 1,2, 7-11 Old Book… Quiz Tomorrow…Mass, moles, limiting reagents!