Question detail

For Gas volumes and amount of substance, which option best supports this Unit 4.3 objective: (chemistry only) (HT only) State that one mole of any gas at room temperature and pressure occupies 24 dm3?

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

  1. A. 72 dm3
  2. B. 36 dm3
  3. C. 48 dm3
  4. D. 60 dm3

Answer

The answer is 72 dm3.

Explanation

The correct option is 72 dm3. This uses Gas Volume at Room Temperature and Pressure because the objective is about (chemistry only) (HT only) State that one mole of any gas at room temperature and pressure occupies 24 dm3. The reasoning belongs to Gas volumes and amount of substance within Use of amount of substance in relation to volumes of gases (chemistry only) (HT only), so it should not be confused with nearby quantitative ideas such as mass, moles, concentration, yield, atom economy, or gas volume unless those are named in the objective. Use the focus term chemistry only to keep the answer aligned with AQA GCSE Chemistry 8462 Unit 4.3. The other options are weaker because they either use the wrong formula, the wrong unit, a vague relationship, or the wrong quantitative context.

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.

Related flashcards

Flashcard 1 of 5

Press Space to flip, arrows to move

Related practice questions

Question 1 of 5

Choose an answer, get feedback, then move sideways through the set.

0 of 3 attempted