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Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO(s) H2O(l) → Ca(OH)2(s) In a particular experiment, a 2.50-g sample of CaO is reacted with excess water and 2.80 g of Ca(OH)2 is recovered. What is the percent yield in this experiment

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joseaaronlara

Answer:

The answer to your question is:

% yield = 84.8

Explanation:

Data

MW CaO = 56 g

MW H2O = 18 g

MW Ca(OH)2 = 74 g

CaO = 2.5 g

Ca(OH)2 = 2.8 g

Balanced Reaction

                    CaO   +    H2O      ⇒      Ca(OH)2

                   56g of CaO     --------------- 74 g  Ca(OH)2

                   2.5 g                ---------------   x

                   x = 3.3 g of Ca(OH)2

% yield = [tex]\frac{2.8}{3.3} x 100[/tex]

% yield = 84.8

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