Question detail
If 48 dm³ of a gas is produced in a reaction at room temperature and pressure, how many moles of gas does this correspond to?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Use of amount of substance in relation to volumes of gases (chemistry only) (HT only)
Question
If 48 dm³ of a gas is produced in a reaction at room temperature and pressure, how many moles of gas does this correspond to?
Answer
The number of moles of gas can be calculated using the formula n = V / 24 dm³. Therefore, n = 48 dm³ / 24 dm³ = 2 moles.
Explanation
This question requires students to apply their knowledge of gas volumes and moles to calculate the amount of substance. It tests their ability to use the formula correctly.
Common mistake
Changing the Subject of Equations
Students often forget to isolate the variable correctly when changing the subject of gas-volume equations, leading to incorrect formulas.
To fix this, practice rearranging equations step-by-step, ensuring each operation is applied to both sides of the equation to maintain balance.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.