Question 15
Added on: Sep 19, 2026
NUMERICALHARD
Characterization and Copolymerization of Organic Compound P
An organic compound with molecular formula decolorizes bromine water and also shows positive iodoform test. on ozonolysis followed by treatment with gives and . While compound shows positive iodoform test, compound does not give positive iodoform test. and on oxidation with pyridinium chlorochromate (PCC) followed by heating give and , respectively. Both and show positive iodoform test. Complete copolymerization of 500 moles of and 500 moles of gives one mole of a single acyclic copolymer . [Given, atomic mass: , , ]
The molecular weight of is _____.
Correct Answer: 93018
Detailed Solution
- (3-hydroxybutanoic acid, ) and (3-hydroxypentanoic acid, ) copolymerize to form PHBV.
- 500 moles of and 500 moles of react to form 1 mole of a single acyclic copolymer . This means each molecule of consists of 1000 monomer units ().
- Molar mass of g/mol.
- Molar mass of g/mol.
- Total mass of reactants = g.
- For an acyclic polymer formed from monomers via condensation, the number of water molecules lost is . Here, .
- Water molecules lost per mole of moles.
- Mass of water lost = g.
- Molecular weight of .
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