(a) 1.00 x 10-3 g of initiator 3 (Mr = 344 g mol-¹) was reacted with 0.538 g of monomer 4 in the presence of a suitable nucleophile in an anhydrous aprotic solvent at room temperature. -Si-O O-Si N 3 (i) Assuming 100% monomer conversion and no side reactions, calculate the average degree of polymerisation (D) of the resultant polymer, 5. 4 (iii) Draw the chemical structure of polymer 5. (ii) Calculate the number-average molar mass (Mn) and approximate weight-average molar mass (Mw) for polymer 5. (iv) Which polymerisation technique has been used to produce polymer 5? Give a reason for your answer.

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2.
(a) 1.00 × 10-3 g of initiator 3 (Mr = 344 g mol-¹) was reacted with 0.538 g of
monomer 4 in the presence of a suitable nucleophile in an anhydrous
aprotic solvent at room temperature.
-Si-O
(i)
(ii)
3
O-Si-
N
4
Assuming 100% monomer conversion and no side reactions,
calculate the average degree of polymerisation (Dp) of the resultant
polymer, 5.
(iii) Draw the chemical structure of polymer 5.
Calculate the number-average molar mass (Mn) and approximate
weight-average molar mass (Mw) for polymer 5.
(iv) Which polymerisation technique has been used to produce polymer
5? Give a reason for your answer.
Transcribed Image Text:2. (a) 1.00 × 10-3 g of initiator 3 (Mr = 344 g mol-¹) was reacted with 0.538 g of monomer 4 in the presence of a suitable nucleophile in an anhydrous aprotic solvent at room temperature. -Si-O (i) (ii) 3 O-Si- N 4 Assuming 100% monomer conversion and no side reactions, calculate the average degree of polymerisation (Dp) of the resultant polymer, 5. (iii) Draw the chemical structure of polymer 5. Calculate the number-average molar mass (Mn) and approximate weight-average molar mass (Mw) for polymer 5. (iv) Which polymerisation technique has been used to produce polymer 5? Give a reason for your answer.
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