1. LIMITING REAGENT

2. LIMITING & EXCESS REACTANT Before the reaction has started After the reaction is complete CO (g) + 2 H 2 (g) CH 3 OH (g)

3. STEPS 1.Use stoichiometry to convert reactant(s) into the product 2.Identify limiting reactant (LR), excess reactant (ER), and max amount of product 3.To calculate how much in excess, subtract the max amount of product and use stoichiometry to convert back to grams of excess reactant

4. How many grams of silver bromide can be formed when solutions containing 50.0 g of magnesium bromide and 100.0 g of silver nitrate are mixed together? What is the limiting reactant? What is in excess, and how much? MgBr 2 + AgNO 3 AgBr + Mg(NO 3 ) 2 EXAMPLE 1

5. How many grams of hydrogen chloride can be produced from 1.00 g of hydrogen and 55.0 g of chlorine? What is the limiting reactant? What is in excess, and how much? H 2 + Cl 2 HCl EXAMPLE 2

6. How many grams of barium sulfate will be formed from 200.0 g of barium nitrate and 150.0 g of sodium sulfate? What is the limiting reactant? What is in excess, and how much? Ba(NO 3 ) 2 + Na 2 SO 4 BaSO 4 + NaNO 3 EXAMPLE 3