CH-514
Separation and purification
Chemistry · Secondary 3 · Medium · Separation and purification
Lavender oil is extracted from flowers by steam distillation. Which statement best explains why steam, rather than direct heating with a flame, is used?
- Steam raises the temperature above 200°C to boil the oil quickly.
- Steam keeps the temperature around 100°C, preventing the flowers from charring.
- Steam reacts chemically with the oil to make it fragrant.
- Steam removes water from the flowers by freezing them.
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