Which of the following are true statements about the molar volume of the mixture?
The molar volume of a binary mixture can be represented by the following function at a given temperature and pressure: V = 22.15 + 24.10x1 + 3.83x12. Here, V has units of m3/mol.
A. The molar volume of pure component (2) is equal to 50.08 m3/mol.
B. The molar volume of pure component (1) is equal to 24.10 m3/mol.
C. The molar volume of the equimolar mixture is 35.16 m3/mol.
D. The reference molar volume is set equal to zero for the pure components.
E. None of the above are true.
A. Incorrect. Pure component 2 would have an x1 of 0, so V would be 22.15 m3/mol.
B. Incorrect. For x1 = 1, V = 22.15 + 24.10 + 3.83 = 50.08 m3/mol.
C. Correct. If one plugs in x1 = 0.5 into the molar volume expression and solves, the answer is 35.16 m3/mol.
D. Incorrect. Reference states are used only with enthalpy, internal energy, Gibbs free energy and other state properties that cannot be directly measured and must be calculated as a difference from some reference value. Volumes are directly measured, avoiding the need for a reference state.
E. Incorrect. One statement is correct.
?
You might also like to view...
A(n) ____ occurs when it is possible for one contact to open before another closes or for one contact to close before another opens.
A. bypass B. contact race C. off-delay D. on-delay
The first oil change after an engine overhaul or replacement should occur at:
A. After the break-in test drive B. 250 miles C. 500 miles D. 1000 miles
Which of the following are not pillars of the U.S. position in the Doha Round:
a. Increased market access. b. Eliminate export subsidies. c. Eliminate multifunctional subsidies. d. Substantially reduce trade-distorting domestic support. e. Enhance developing countries' integration into WTO.
While having a discussion, Technician A says that a solenoid has contact points, whereas a relay uses a movable iron piston attached to a contact disc. Technician B says that a relay has contact points, whereas a solenoid uses a steel piston moved against a contact disc by magnetism. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B