How is ethene collected in the dehydration of ethanol?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $9.99Unlock all

Study for the IGCSE Organic Chemistry Test. Engage with flashcards and multiple-choice questions, complete with hints and detailed explanations. Prepare effectively to excel in your exam!

Multiple Choice

How is ethene collected in the dehydration of ethanol?

Explanation:
Gas collection by water displacement is used for gases that don’t dissolve in water and don’t react with it. Ethene produced when ethanol is dehydrated is a dry gas that isn’t soluble in water, so it can be captured by collecting the gas over water. The ethene bubbles out and pushes the water out of an inverted container, giving you the collected gas. The other options aren’t about gathering a gas: distillation separates liquids by boiling points, filtration removes solids, and precipitation forms a solid from solution.

Gas collection by water displacement is used for gases that don’t dissolve in water and don’t react with it. Ethene produced when ethanol is dehydrated is a dry gas that isn’t soluble in water, so it can be captured by collecting the gas over water. The ethene bubbles out and pushes the water out of an inverted container, giving you the collected gas. The other options aren’t about gathering a gas: distillation separates liquids by boiling points, filtration removes solids, and precipitation forms a solid from solution.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy