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Ksenia8A
@Ksenia8A
August 2022
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Определите недостающие звенья цепочек, характеризующих генетическую связь веществ:
а)S-?-H2SO3-CaSO3
б)Fe-Fe2O3-?-Fe(OH)3
в)Ca-?-?-Ca(NO3)2
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zubareva45
Verified answer
A) SO₂+H₂O=H₂SO₃
H₂SO₃+Ca(OH)₂=CaCO₃+2H₂O
б) 2Fe+3O₂=Fe₂O₃
Fe₂O₃+6HCl=2FeCl₃+3H₂O
FeCl₃ + 3NaOH=Fe(OH)₃+3NaCl
в) 2Ca+O₂=2CaO
CaO+H₂O=Ca(OH)₂
Ca(OH)₂+2HNO₃=Ca(NO₃)₂+2H₂O
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Answers & Comments
Verified answer
A) SO₂+H₂O=H₂SO₃H₂SO₃+Ca(OH)₂=CaCO₃+2H₂O
б) 2Fe+3O₂=Fe₂O₃
Fe₂O₃+6HCl=2FeCl₃+3H₂O
FeCl₃ + 3NaOH=Fe(OH)₃+3NaCl
в) 2Ca+O₂=2CaO
CaO+H₂O=Ca(OH)₂
Ca(OH)₂+2HNO₃=Ca(NO₃)₂+2H₂O