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The straight chain polymer is formed by:[2009]
- a)hydrolysis of CH3SiCl3 followed by condensation polymerisation
- b)hydrolysis of (CH3)4 Si by addition polymerisation
- c)hydrolysis of (CH3)2SiCl2 followed by condensation polymerisation
- d)hydrolysis of (CH3)3SiCl followed by condensation polymerisation
Correct answer is option 'C'. Can you explain this answer?
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The straight chain polymer is formed by:[2009]a)hydrolysis of CH3SiCl3...
Hydrolysis of substituted chlorosilanes yield corresponding silanols which undergo polymerisation.
Polymerisation of dialkyl silandiol yields linear thermoplastic polymer.
Most Upvoted Answer
The straight chain polymer is formed by:[2009]a)hydrolysis of CH3SiCl3...
Hydrolysis of (CH3)2SiCl2 followed by condensation polymerisation is the correct process for the formation of a straight chain polymer.
Explanation:
Hydrolysis is a chemical reaction in which a compound reacts with water to form new compounds. In this case, (CH3)2SiCl2 undergoes hydrolysis to form (CH3)2Si(OH)2, also known as dimethylsilanediol.
Condensation polymerisation is a process in which monomers join together to form a polymer with the elimination of a small molecule such as water. In this case, the dimethylsilanediol monomers undergo condensation polymerisation to form a straight chain polymer.
Here is a detailed explanation of each step:
1. Hydrolysis of (CH3)2SiCl2:
(CH3)2SiCl2 + 2H2O → (CH3)2Si(OH)2 + 2HCl
In this step, (CH3)2SiCl2 reacts with water to form (CH3)2Si(OH)2 and hydrochloric acid (HCl) as a byproduct.
2. Condensation polymerisation:
(CH3)2Si(OH)2 + (CH3)2Si(OH)2 → -[(CH3)2Si-O-Si(CH3)2]- + 2H2O
In this step, the dimethylsilanediol monomers, (CH3)2Si(OH)2, react with each other to form a straight chain polymer, -[(CH3)2Si-O-Si(CH3)2]-, also known as polydimethylsiloxane (PDMS) or silicone. This reaction involves the elimination of water molecules.
The resulting polymer, polydimethylsiloxane (PDMS), is a straight chain polymer with repeating units of (-Si-O-)n, where n represents the number of repeating units. PDMS is commonly used in various applications, including lubricants, adhesives, sealants, and coatings, due to its unique properties such as high thermal stability, low surface tension, and excellent electrical insulation.
In conclusion, the correct process for the formation of a straight chain polymer is the hydrolysis of (CH3)2SiCl2 followed by condensation polymerisation. This process results in the formation of polydimethylsiloxane (PDMS) or silicone.
Explanation:
Hydrolysis is a chemical reaction in which a compound reacts with water to form new compounds. In this case, (CH3)2SiCl2 undergoes hydrolysis to form (CH3)2Si(OH)2, also known as dimethylsilanediol.
Condensation polymerisation is a process in which monomers join together to form a polymer with the elimination of a small molecule such as water. In this case, the dimethylsilanediol monomers undergo condensation polymerisation to form a straight chain polymer.
Here is a detailed explanation of each step:
1. Hydrolysis of (CH3)2SiCl2:
(CH3)2SiCl2 + 2H2O → (CH3)2Si(OH)2 + 2HCl
In this step, (CH3)2SiCl2 reacts with water to form (CH3)2Si(OH)2 and hydrochloric acid (HCl) as a byproduct.
2. Condensation polymerisation:
(CH3)2Si(OH)2 + (CH3)2Si(OH)2 → -[(CH3)2Si-O-Si(CH3)2]- + 2H2O
In this step, the dimethylsilanediol monomers, (CH3)2Si(OH)2, react with each other to form a straight chain polymer, -[(CH3)2Si-O-Si(CH3)2]-, also known as polydimethylsiloxane (PDMS) or silicone. This reaction involves the elimination of water molecules.
The resulting polymer, polydimethylsiloxane (PDMS), is a straight chain polymer with repeating units of (-Si-O-)n, where n represents the number of repeating units. PDMS is commonly used in various applications, including lubricants, adhesives, sealants, and coatings, due to its unique properties such as high thermal stability, low surface tension, and excellent electrical insulation.
In conclusion, the correct process for the formation of a straight chain polymer is the hydrolysis of (CH3)2SiCl2 followed by condensation polymerisation. This process results in the formation of polydimethylsiloxane (PDMS) or silicone.
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The straight chain polymer is formed by:[2009]a)hydrolysis of CH3SiCl3 followed by condensation polymerisationb)hydrolysis of (CH3)4 Si by addition polymerisationc)hydrolysis of(CH3)2SiCl2 followed by condensation polymerisationd)hydrolysis of (CH3)3SiCl followed by condensation polymerisationCorrect answer is option 'C'. Can you explain this answer?
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The straight chain polymer is formed by:[2009]a)hydrolysis of CH3SiCl3 followed by condensation polymerisationb)hydrolysis of (CH3)4 Si by addition polymerisationc)hydrolysis of(CH3)2SiCl2 followed by condensation polymerisationd)hydrolysis of (CH3)3SiCl followed by condensation polymerisationCorrect answer is option 'C'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about The straight chain polymer is formed by:[2009]a)hydrolysis of CH3SiCl3 followed by condensation polymerisationb)hydrolysis of (CH3)4 Si by addition polymerisationc)hydrolysis of(CH3)2SiCl2 followed by condensation polymerisationd)hydrolysis of (CH3)3SiCl followed by condensation polymerisationCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The straight chain polymer is formed by:[2009]a)hydrolysis of CH3SiCl3 followed by condensation polymerisationb)hydrolysis of (CH3)4 Si by addition polymerisationc)hydrolysis of(CH3)2SiCl2 followed by condensation polymerisationd)hydrolysis of (CH3)3SiCl followed by condensation polymerisationCorrect answer is option 'C'. Can you explain this answer?.
The straight chain polymer is formed by:[2009]a)hydrolysis of CH3SiCl3 followed by condensation polymerisationb)hydrolysis of (CH3)4 Si by addition polymerisationc)hydrolysis of(CH3)2SiCl2 followed by condensation polymerisationd)hydrolysis of (CH3)3SiCl followed by condensation polymerisationCorrect answer is option 'C'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about The straight chain polymer is formed by:[2009]a)hydrolysis of CH3SiCl3 followed by condensation polymerisationb)hydrolysis of (CH3)4 Si by addition polymerisationc)hydrolysis of(CH3)2SiCl2 followed by condensation polymerisationd)hydrolysis of (CH3)3SiCl followed by condensation polymerisationCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The straight chain polymer is formed by:[2009]a)hydrolysis of CH3SiCl3 followed by condensation polymerisationb)hydrolysis of (CH3)4 Si by addition polymerisationc)hydrolysis of(CH3)2SiCl2 followed by condensation polymerisationd)hydrolysis of (CH3)3SiCl followed by condensation polymerisationCorrect answer is option 'C'. Can you explain this answer?.
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