Characterize the substance Al2 (SO4) 3 according to the following plan: Name of the substance Complex

| April 28, 2021 | education

Characterize the substance Al2 (SO4) 3 according to the following plan: Name of the substance Complex or simple qualitative composition quantitative composition How many molecules MrW () mass ratio c.e.

1) Al2 (SO4) 3 – aluminum sulfate;
2) Complex substance;
3) 2 aluminum atoms (Al), 3 sulfur atoms (S), 12 oxygen atoms (O);
4) 1 molecule;
5) Mr (Al2 (SO4) 3) = Ar (Al) * N (Al) + Ar (S) * N (S) + Ar (O) * N (O) = 27 * 2 + 32 * 3 + 16 * 12 = 342;
6) ω (Al in Al2 (SO4) 3) = N (Al in Al2 (SO4) 3) * Ar (Al) * 100% / Mr (Al2 (SO4) 3) = 2 * 27 * 100% / 342 = 15.79%;
ω (S in Al2 (SO4) 3) = N (S in Al2 (SO4) 3) * Ar (S) * 100% / Mr (Al2 (SO4) 3) = 3 * 32 * 100% / 342 = 28, 07%;
ω (O in Al2 (SO4) 3) = 100% – ω (Al in Al2 (SO4) 3) – ω (S in Al2 (SO4) 3) = 100% – 15.79% – 28.07% = 56 ,fourteen%;
7) 1: 1.8: 3.6 = 5: 9: 18.



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