Question detail
Calculate the temperature in Kelvin of 3 moles of an ideal gas at a pressure of 150 kPa occupying a volume of 15 dm3.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Amount of substance
Question
- A. 400 K
- B. 300 K (A-level cue 0cde9637 distractor 1)
- C. 350 K (A-level cue 0cde9637 distractor 2)
- D. 450 K (A-level cue 0cde9637 distractor 3)
Answer
400 K
Explanation
The correct option is 400 K. 400 K is correct because it supports the objective: Rearrange the ideal gas equation to calculate pressure, volume, amount, gas constant or temperature where appropriate.. The reasoning stays within The ideal gas equation and avoids drifting into a similar A-Level Chemistry idea. This item is treated as conceptual revision rather than a formal calculation item because the validated answer is an explanation or option choice, not a worked numerical response.
Common mistake
Rearranging the Ideal Gas Equation
Students often forget to convert all values to SI units before using the ideal gas equation, leading to incorrect calculations.
Always convert pressure to Pascals (Pa), volume to cubic meters (m³), and temperature to Kelvin (K) before substituting values into the ideal gas equation (pV = nRT). For example, if given pressure in atm, convert it to Pa using the conversion 1 atm = 101325 Pa.
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