Question

Silicon chloroform is prepared by :

• A. $Si+HCl$
• B. $Si{Cl}_4+H_{2}O$
• C. $Si{F}_4+NaF$
• D. $H_{2}Si{F}_6+{Cl}_2$

Answer 1

The correct option is A $Si+HCl$

$Si+4HCl\to SiC{l}_4+2H_2$.

$3SiC{l}_4+Si+2H_2\to 4HSiC{l}_3$

Silicochloroform is a colourless, mobile, strongly smelling liquid which boils at 33° C under 758 mm pressure and forms a crystalline solid which melts at -134° C. The density of the liquid at 15° C is 1.3438, and its vapour density 4.64, which corresponds with theory. It may be observed that chloroform, $CHC{l}_3$ boils at 61.5° C. It will be noticed in the course of what follows that, apart from polymerisation, silicon compounds are generally more volatile than the corresponding carbon compounds.