Write the chemical formulas of medium salts formed by aluminum and carbonic, sulfuric and silicic acids.
| December 13, 2020 | education
Write the chemical formulas of medium salts formed by aluminum and carbonic, sulfuric and silicic acids. Name these salts. Determine in which of the indicated salts the mass fraction of aluminum is greatest.
1) Al2 (CO3) 3 aluminum carbonate
W (Al) = (2 * 27 / (2 * 27 + 3 * 12 + 9 * 16)) * 100% ≈23% (the largest mass fraction)
2) Al2 (SO4) 3 aluminum sulfate
(2 * 27/2 * 27 + 3 * 32 + 12 * 16)) * 100% ≈16%
3) Al2 (SiO3) 3 aluminum silicate
(2 * 27/2 * 27 + 28 + 9 * 16)) * 100% ≈19%
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