Автор - danilakchebash

Помогите решить цепочки!

Ответ

Автор - svetka157412

1)2Ba+O2=2BaO

BaO+H2O=Ba(OH)2

Ba(OH)2+2HCl=BaCl2+2H2O

2)4 P+5O2=2P2O5

P2O5+3H2O=2H3PO4

H3PO4+3NaOH=Na3PO4+3H2O

3) 2Fe(OH)3=Fe2O3+3H2O

Fe2O3+6HCl=2FeCl3+3H2O

FeCl3+3NaOH=Fe(OH)3+3NaCl

4) S+O2=SO2

SO2+H2O=H2SO3

H2SO3+CaCl2=CaSO3+2HCl

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