Gibbs free energy (G) is represented by, G = H – TS, whereas Helmholtz free energy, A. is given by, A = E – TS. Which of the following is the Gibbs-Helmholtz equation ?

Related Mcqs:

1. The molar excess Gibbs free energy, gE, for a binary liquid mixture at T and P is given by, (gE/RT) = A . x1. x2, where A is a constant. The corresponding equation for ln y1, where y1 is the activity co-efficient of component 1, is__________________?

   A. A . x22 B. Ax1 C. Ax2 D. Ax12...

2. Gibbs-Helmholtz equation is__________________?

   A. ΔF = ΔH + T [∂(ΔF)/∂T]P B. ΔF = ΔH – TΔT C. d(E – TS) T, V < 0 D. dP/dT = ΔHvap/T.ΔVvap...

3. Helmholtz free energy A. is defined as____________________?

   A. A = H – TS B. A = E – TS C. A = H + TS D. None of these...

4. The Maxwell relation derived from the differential expression for the Helmholtz free energy (dA) is________________?

   A. (∂T/∂V)S = – (∂P/∂S)V B. (∂S/∂P)T = – (∂V/∂T)P C. (∂V/∂S)P = (∂T/∂P)S D. (∂S/∂V)T = (∂P/∂T)V...

5. The standard Gibbs free energy change of a reaction depends on the equilibrium______________________?

   A. Pressure B. Temperature C. Composition D. All A, B. and C...

6. Gibbs free energy of mixing at constant pressure and temperature is always__________________?

   A. 0 B. ∞ C. + ve D. – ve...

7. Gibbs free energy per mole for a pure substance is equal to the__________________?

   A. Latent heat of vaporisation B. Chemical potential C. Molal boiling point D. Heat capacity...

8. Gibbs free energy of a pure fluid approaches _____________ as the pressure tends to zero at constant temperature?

   A. Infinity B. Minus infinity C. Zero D. None of these...

9. The change in Gibbs free energy for vaporisation of a pure substance is___________________?

   A. Positive B. Negative C. Zero D. May be positive or negative...

10. Specific/molar Gibbs free energy for a pure substance does not change during________________?

    A. Sublimation B. Vaporisation C. Melting D. Either A, B. or C....