OH Cl
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CH3 - CH - CH
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Cl
K₂SO₃ + H₂SO₄ = SO₂↑ + H₂O + K₂SO₄<span>
2K</span>⁺ + SO₃²⁻ + 2H⁺ + SO₄²⁻ = SO₂↑ + H₂O + 2K⁺ + SO₄²⁻<span>
</span>SO₃²⁻ + 2H⁺ = SO₂↑ + H₂O <span> </span>
Ответ в файлах смотри,что могла,то сделала.
2Fe + 3Cl2 = 2FeCl3
FeCl3 + 3NaOH = Fe(OH)3 + 3NaCl
2Fe(OH)3= Fe2O3 + 3H2O
Fe2O3 + 3H2= 2Fe + 3H2O
Fe + 2HCl= FeCl2 + H2
CaCl2
W(Ca) = Ar(Ca) * n / Mr(CaCl2) *100% = 40 * 1 / 110 *100% = 36,36%
W(Cl) = Ar(Cl) * n / Mr(CaCl2) * 100% = 35 * 2 / 110 *100% =63,63%
Na3PO4
W(Na) = Ar(Na) * n / Mr(Na3PO4 *100% = 23 * 3 / 164 *100% = 42%
W(P) = Ar(P) * n / Mr(Na3PO4) *100% = 31 * 1 / 164 *100% = 18,9%
W(O) = Ar(O) * n / Mr(Na3PO4) * 100% = 16 * 4 / 164 *100% = 39%
Fe(OH)3
W(Fe) = Ar(Fe) * n / Mr(Fe(OH)3) *100% = 56 * 1 / 107 * 100% = 52,33%
W(O) = Ar(O) * n / Mr(Fe(OH)3 *100% = 16 * 3 / 107 *100% = 44,86%
W(H) = Ar(H) * n / Mr(Fe(OH)3) *100% = 1*3 / 107 *100% = 2,8%