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#5 of 11-6 LIMITING REAGENT SET
INTRODUCTION OF ICE BOX STOICHIOMETRY SOLUTION TABLES. ICE BOX SOLUTION TABLES: ARE THE MOST EFFICIENT TO SOLVE FOR EVERYTHING WHAT IS EVERYTHING? REAGENTS LEFT OVER (UNCONSUMED) PRODUCT YIELD REACTANTS CONSUMED TO 0.0 MOLES. 5) Sulfur and oxygen react in a combination reaction to produce sulfur trioxide, an environmental 5) pollutant: 2S (s) + 3O2 (g) 2SO3 (g) In a particular experiment, the reaction of 1.0 g S with 1.0 g O2 produced 0.80 g of SO3. Calculate the amount of excess reagent that remains not having reacted (in excess).
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Defining X X is defined by the LIMMITING REAGENT. Divide the moles of the limiting reagent by the coefficient of the balanced reaction. In this example oxygen is the limiting reagent, therefore X = mol X = mole 2S 3O 2SO3 mol mol 0.0 -2 X -3 X +2 X mol -2x 2 ( ) = mol -2x : mol - 2 ( mol) mol -( ) = mol S remains
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