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05 HW - Ltd Reactants and Percent Yield

# 05 HW - Ltd Reactants and Percent Yield - H 3 PO 4(aq Ca(OH...

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Name: ________________________________________ Date: ____________ WKST #9: Percent Yield and Limiting Reactants (40 points) Period: ___________ 1. Calculate the percent yield for an experiment in which 5.50 g of SOCl 2 was obtained in a reaction of 5.80 g of SO 2 with 8.25 g PCl 5 . Use the following equation: ____ SO 2 (g) + ____ PCl 5 (g) ____ SOCl 2 (g) + ____ POCl 3 (g) 2. When iron (II) hydroxide is mixed with phosphoric acid, iron (II) phosphate precipitate results. ____ Fe(OH) 2 (aq) + ____ H 3 PO 4 (aq) ___ Fe 3 (PO 4 ) 2 (s) + ____ H 2 O (l) a. If 3.00 g of Fe(OH) 2 is treated with 2.50 g of phosphoric acid, what is the limiting reagent and what is the reactant in excess? b. How many grams of Fe 3 (PO 4 ) 2 precipitate can be formed? c. If 3.99 g of Fe 3 (PO 4 ) 2 is actually obtained, what is the percent yield?

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3. Given the following equation:
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Unformatted text preview: ____ H 3 PO 4 (aq) + ____ Ca(OH) 2 (aq) ____ Ca 3 (PO 4 ) 2 (s) + ____ H 2 O (l) If 49.0 g of KOH is reacted with excess H 3 PO 4 , determine the percent yield of Ca 3 (PO 4 ) 2 if you isolate 49.0 g of K 3 PO 4 ? 4. Arcylonitrile, C 3 H 3 N, is the starting material for the production of a kind of synthetic fiber acrylics and can be made from propylene, C 3 H 6 , by reaction with nitric oxide, NO, as follows: ____ C 3 H 6 (g) +____ NO (g) ____ C 3 H 3 N (s) + ____ H 2 O (l) + ____ N 2 (g) a. If the reaction is run using 21.6 g of C 3 H 6 react with 21.6 g of nitric oxide, which is the limiting reactant? b. What is the theoretical yield of C 3 H 3 N? c. If only 6.75 g of the product is recovered, what was the percent yield of the reaction?...
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