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Pechenka100500
@Pechenka100500
June 2022
1
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Напишите 2-3 возможных способа получения натрий силиката; купрум (II)хлорида.
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Дедище
SiO2
+ Na
2CO3
= Na
2SiO3
+ CO
2
SiO2
+ 2NaOH = Na
2SiO3
+ H
2
O
Si + 2NaOH + H2O = Na2SiO3
+ 2H
2
-------------------------------------------------
2HCl
+ Cu = CuCl
2
+ H
2
CuS + Cl2
= CuCl
2
+ S
Cu(OH)2
+ 2HCl (разб.) = CuCl
2
+ 2H
2
O
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Answers & Comments
SiO2 + 2NaOH = Na2SiO3 + H2O
Si + 2NaOH + H2O = Na2SiO3 + 2H2
-------------------------------------------------
2HCl + Cu = CuCl2 + H2
CuS + Cl2 = CuCl2 + S
Cu(OH)2 + 2HCl (разб.) = CuCl2 + 2H2O