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Starting from SiCI 4 , prepare the following in steps not exceeding the number given in parentheses (give reactions only): (i) Silicon (1) (ii) Linear silicone containing methyl groups only (4) (iii) Na 2 SiO 3 (3)

Starting from SiCI4, prepare the following in steps not exceeding the number given in parentheses (give reactions only):
(i) Silicon (1)
(ii) Linear silicone containing methyl groups only (4)
(iii) Na2SiO3 (3) 

Grade:upto college level

1 Answers

Navjyot Kalra
askIITians Faculty 654 Points
7 years ago
(i) SiCl4 + 2Mg(or Zn) → Si + 2MgC12 (or ZnCI2)
(ii) SiCl4 + 2CH3MgCI → (CH3)2SiC12 + 2MgC12
232-1571_7777777.jpg
Polymerization continues on both ends to give linear silicone.
(iii) SiCI4 + 2Mg → Si + 2MgC12
Si + Na2CO3 → Na2SiO3 + C
SiCI4 + Na2CO3 → Na2SiO3 + C
Si(OH)2 \overset{heat}{\rightarrow}SiO2 + 2H2O
SiO2 + 2NaOH → Na2SiO3 + H2O

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