What is the mass fraction of the output if, upon decomposition of 200 grams of calcium carbonate
| April 27, 2021 | education
What is the mass fraction of the output if, upon decomposition of 200 grams of calcium carbonate, 100 grams of calcium oxide were formed?
CaCO3 = CaO + CO2
Output: n = m (practical) / m (theoretical) * 100%.
n (CaCO3) = m / M = 200 / (40 + 12 + 16 * 3) = 200/100 = 2 mol.
n (CaO) = 2 mol, because ratio of ratios 1: 1.
m (theory) (CaO) = 2 * (40 + 16) = 112 gr.
n = 100/112 * 100% = 89.29%.
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