Question detail
What is the volume of 2 moles of a gas at room temperature and pressure?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Use of amount of substance in relation to volumes of gases (chemistry only) (HT only)
Question
- A. 48 dm3
- B. 24 dm3
- C. 12 dm3
- D. 36 dm3
Answer
48 dm3
Explanation
At room temperature and pressure, one mole of gas occupies 24 dm3. Therefore, 2 moles occupy 2 x 24 dm3 = 48 dm3.
Common mistake
Misunderstanding Gas Volume
Students often confuse the volume occupied by one mole of gas at room temperature and pressure, thinking it is 22.4 dm3 instead of 24 dm3.
Remember that at room temperature and pressure, one mole of any gas occupies 24 dm3, not 22.4 dm3. Use this value in calculations involving gas volumes.
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