TS EAMCET · Chemistry · p Block Elements (Group 13 & 14)

$Si$ reacts with ${CH}_{3} Cl$ at $573 K$ in the presence of $Cu$ powder to form methyl substituted chlorosilanes. Among the given methyl substituted chlorosilanes, whose yield is minimum?

A ${CH}_{3} {SiCl}_{3}$
B ${({CH}_{3})}_{2} {SiCl}_{2}$
C ${({CH}_{3})}_{3} SiCl$
D ${({CH}_{3})}_{4} Si$

Verified Solution

Answer & Solution

Correct Answer

(D) ${({CH}_{3})}_{4} Si$

Step-by-step Solution

Detailed explanation

When heating the silicon with methyl chloride at high temperature in the presence of copper, it produces a mixture of mono, di and tri-methyl chlorosilanes and tetramethylsilane. CH3Cl+Si→573 KCu powderCH3SiCl3+CH32SiCl2+CH33SiCl+CH34Si Out of which,…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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	List-I		List-II
(A)	$f (- 5) + f (0) + f (- 1) =$	(I)	$16$
(B)	$f (f (5) + 10 f (- 3)) =$	(II)	$40$
(C)	$f (\|f (- 4)\|) =$	(III)	$- 32$
(D)	$f (f (f (1))) =$	(IV)	$- 12$
		(V)	$19$

Si reacts with CH3Cl at 573 K in the presence of Cu powder to form methyl substituted chlorosilanes. Among the given methyl substituted chlorosilanes, whose yield is minimum?

Step-by-step Solution

$Si$ reacts with ${CH}_{3} Cl$ at $573 K$ in the presence of $Cu$ powder to form methyl substituted chlorosilanes. Among the given methyl substituted chlorosilanes, whose yield is minimum?