What is the molecular formula for ethane?

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

Prepare for the IGCSE Organic Chemistry Exam. Study with flashcards and multiple choice questions, each question has hints and explanations to ensure you understand the core concepts. Get ready for your test with confidence!

Multiple Choice

What is the molecular formula for ethane?

Explanation:
Ethane is an alkane with two carbon atoms, and alkanes follow the formula CnH2n+2 because they are saturated with single bonds. With two carbons (n = 2), the hydrogen count is 2×2 + 2 = 6, giving the molecular formula C2H6. So ethane has two carbons and six hydrogens. The other options have the wrong number of carbons: one carbon would be CH4 (methane), three carbons would be C3H8 (propane), and five carbons would be C5H12 (pentane).

Ethane is an alkane with two carbon atoms, and alkanes follow the formula CnH2n+2 because they are saturated with single bonds. With two carbons (n = 2), the hydrogen count is 2×2 + 2 = 6, giving the molecular formula C2H6. So ethane has two carbons and six hydrogens. The other options have the wrong number of carbons: one carbon would be CH4 (methane), three carbons would be C3H8 (propane), and five carbons would be C5H12 (pentane).

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy