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kbuld
@kbuld
July 2022
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25. «Генетическая связь между классами неорганических веществ»
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1. Fe--- FeCL2 --- Fe(OH)2 --- Fe(NO3)2
2. S---SO3 --- H2SO4--- BaSO4
3. BaCL2 -> BaSO4--> X1 -> BaCl2
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vodozhaba
1.
1) Fe + 2HCl = FeCl2 + H2;
2) FeCl2 + 2NaOH = 2NaCl + Fe(OH)2;
3) Fe(OH)2 + 2HNO3 = Fe(NO3)2 + 2H2O.
2.
1) 2S + 3O2 = 2SO3;
2) SO3 + H2O = H2SO4;
3) H2SO4 + Ba(OH)2 = BaSO4 + H2O.
3.
1) BaCl2 + H2SO4 = BaSO4 + 2HCl;
2) BaSO4 + 2NaOH = Ba(OH)2 + Na2SO4;
X1 = Ba(OH)2;
3) Ba(OH)2 + 2HCl = BaCl2 + 2H2O.
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Answers & Comments
1) Fe + 2HCl = FeCl2 + H2;
2) FeCl2 + 2NaOH = 2NaCl + Fe(OH)2;
3) Fe(OH)2 + 2HNO3 = Fe(NO3)2 + 2H2O.
2.
1) 2S + 3O2 = 2SO3;
2) SO3 + H2O = H2SO4;
3) H2SO4 + Ba(OH)2 = BaSO4 + H2O.
3.
1) BaCl2 + H2SO4 = BaSO4 + 2HCl;
2) BaSO4 + 2NaOH = Ba(OH)2 + Na2SO4;
X1 = Ba(OH)2;
3) Ba(OH)2 + 2HCl = BaCl2 + 2H2O.