Calcium Oxide Reacts with Water in a Combination Reaction to Produce

question 114

Multiple Choice

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?

• A) 112
• B) 1.12
• C) 3.60
• D) 84.9
• E) 89.2

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