Calculate the mass of calcium oxide required to produce 37 g of calcium hydroxide.
| February 7, 2021 | education
Given:
m (Ca (OH) 2) = 37 g
To find:
m (CaO) -?
Decision:
1) CaO + H2O => Ca (OH) 2;
2) n (Ca (OH) 2) = m (Ca (OH) 2) / M (Ca (OH) 2) = 37/74 = 0.5 mol;
3) n (CaO) = n (Ca (OH) 2) = 0.5 mol;
4) m (CaO) = n (CaO) * M (CaO) = 0.5 * 56 = 28 g.
Answer: The mass of CaO is 28 g.
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