32) 3.00 moles of an ideal gas are expanded isothermally against a constant pressure of 1 atm from 2.0 liters to 10.0 liters at a temperature of 20.0 C.
Which of the following is incorrect?
1. w = -PDV = -(1atm)(8 l) = -(101.3 J/l)(8 l) = -811.2 J
2. q = -w (since DU = 0) = 811.2 J
3. DU = 0 (since isothermal ideal gas)
4. DSSYS = ∆H/T = 0
33) In general, for a thermodynamic function F, ∆F° indicates
1. The variation of F in standard conditions
2. F in a pure state
3. The variation of F in a change of phase
4. The zero-order partial derivative of F
34) Values for lnK are plotted at a function of 1/T in an experiment to determine the standard state change of enthalpy of a chemical reaction. The slope of the line is
1. lnK at low temperatures
2. RT (with T in Kelvin)
3. ∆rH°/R
4. T (in Kelvin)
35) In general, for a pure substance in a given state, the slope of G vs. T is
1. Greater than zero
2. Equal to zero
3. Less than zero
4. Divergent
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