How many grams of calcium hydroxide can be obtained from calcium oxide with a mass of 5.6 g?

univerkov | September 22, 2021 | education

The reaction of obtaining calcium hydroxide.

CaO + H2O = Ca (OH) 2.

Let us determine the number of moles of substances that will be equal.

n (CaO) = m / Mr = 5.6 / 56 = 0.1 mol.

n (CaO) = n (Ca (OH) 2) = 0.1 mol.

The mass of calcium hydroxide is.

m (Ca (OH) 2) = n • Mr = 0.1 • 74 = 7.4 g.

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