Determine the mass fraction of each chemical element in calcium bicarbonate

univerkov | May 10, 2021 | education

Let’s calculate the mass fraction of elements in calcium bicarbonate according to the formula.
W (e-ta) = (n • Ar (e-ta)) / Mr (in-va) • 100%.
Mr (Ca (HCO3) 2) = 162 g / mol.
W (Ca) = 40/162 • 100% = 24.69%.
W (H) = 2 • 1/162 • 100% = 1.23%.
W (C) = 2 * 12/162 * 100% = 14.81%.
W (O) = 6 * 16/162 * 100% = 59.26%.

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