Exam-style question
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During a Boyle's law experiment, which of the following conditions must be maintained to ensure the law holds?.
- A.Temperature must be constant
- B.Pressure must be constant
- C.Volume must be constant
- D.Number of moles must be constant
Model answer
What a good answer should say
- Temperature must be constant.
Explanation
Why this works
Formula/rule: P1V1 = P2V2. Substitution: If temperature changes, the ideal gas constant nRT changes, breaking the constant product.
Working: Temperature constant ensures nRT remains unchanged. Answer: Temperature must be constant.
Units/Conclusion: Temperature must remain constant for Boyle's law to apply.
Common mistake
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