In the reaction 2H₂ + O₂ → 2H₂O, what is the molar ratio of hydrogen to water?

A 1:1

B 2:1

C 1:2

D 2:2

✓ Correct Answer: Option D

The coefficients show the molar ratio: 2 moles H₂ produce 2 moles H₂O, so the ratio is 2:2 (or equivalently 1:1).

💡 Why is D) the correct answer?

The correct answer to the question "In the reaction 2H₂ + O₂ → 2H₂O, what is the molar ratio of hydrogen to water?" is Option D: 2:2.

The other options — A) 1:1, B) 2:1, C) 1:2 — are incorrect for this IB Exam Prep question. As explained above: The coefficients show the molar ratio: 2 moles H₂ produce 2 moles H₂O, so the ratio is 2:2 (or equivalently 1:1).

📚 About This IB Exam Prep Practice Question

This 2-level IB Exam Prep question from the Chemistry topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free IB Exam Prep practice test or use flashcards for spaced repetition review.

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In the reaction 2H₂ + O₂ → 2H₂O, what is the molar ratio of hydrogen to water?

✓ Correct Answer: Option D

📚 About This IB Exam Prep Practice Question

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