Engineering Board Exam Reviewer · Thermodynamics · medium

A gas in a rigid container is at 200 kPa and 300 K. If it is heated to 450 K, what is its final pressure?

  1. 133.3 kPa
  2. 300 kPa
  3. 250 kPa
  4. 450 kPa

Answer

B. 300 kPa

Solution

Gay-Lussac's law: P2 = P1(T2/T1) = 200(450/300) = 300 kPa.

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