In a plant, 2.1 tonnes of propene is fed into a reactor and 90% of it is converted into polypropene. What mass of polypropene is produced?
Correct answer B. 1.89 tonnes
Explanation
Addition polymerisation has 100% atom economy, so the mass of polymer equals the mass of propene converted. Mass = 0.90 × 2.1 = 1.89 tonnes. The value 0.21 tonnes is the unconverted propene.
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