A liquid has constant ?V = 3.000 × 10-4 K-1, constant ?T = 2.000 × 10-5 MPa-1 and constant CP = 90 J/mol•K. A rigid, sealed, 0.1 m3 container contains 750 moles of this liquid at T = 300 K and P = 0.1 MPa. What is the final pressure that results if this liquid is heated to 350 K?

A. 7.6 MPa
B. 333.3 MPa
C. 750.0 MPa
D. 750.1 MPa
E. Insufficient information to solve


A. Incorrect. You made a calculation mistake. Check the numbers in your equation.
B. Incorrect. You made an algebra mistake in isolating P.
C. Incorrect. This is the pressure difference, not the final pressure.
D. Correct. The 50 K increase in temperature causes a massive pressure rise in this closed container.
E. Incorrect. There is enough information provided. Some of it is actually not required to solve the problem. Try writing some total derivatives.

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