Same chapter3 marksDifficulty: Medium
How is ethene prepared from ethanol in the laboratory? Write the equation and state the conditions.
Organic Chemistry
3 marksDifficulty: Medium
How would you distinguish between ethane and ethene using bromine water?
Original Khojo Papers practice question — not from a past board paper.
Answer
Ethene decolourises reddish-brown bromine water rapidly because it is unsaturated and adds bromine across the double bond. Ethane, being saturated, produces no change in the cold and in the dark.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Alkaline potassium permanganate can be used in the same way.
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