Thermodynamics for Chemical

The number of degrees of freedom for a mixture of ice and water (liquid) are ____________________?

Byadmin March 12, 2019August 30, 2021

The number of degrees of freedom for a mixture of ice and water (liquid) are ____________________?

A. 3
B. 2
C. 1
D. 0

Thermodynamics for Chemical

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 ?

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 ?

A. [∂(G/T)/∂T] = – (H/T2)
B. [∂(A/T)/∂T]V = – E/T2
C. Both A. and B.
D. Neither A. nor B.

Read More 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 ?
Thermodynamics for Chemical

What is the value of Joule-Thomson co-efficient for an ideal gas ?

What is the value of Joule-Thomson co-efficient for an ideal gas ?

A. +ve
B. -ve
C. 0
D. ∞

Read More What is the value of Joule-Thomson co-efficient for an ideal gas ?
Thermodynamics for Chemical

For spontaneous changes in an isolated system (S = entropy) ___________________?

For spontaneous changes in an isolated system (S = entropy) ___________________?

A. ds = 0
B. ds <0
C. ds > 0
D. ds = Constant

Read More For spontaneous changes in an isolated system (S = entropy) ___________________?
Thermodynamics for Chemical

When liquid and vapour phases of one component system are in equilibrium (at a given temperature and pressure), the molar free energy is__________________?

When liquid and vapour phases of one component system are in equilibrium (at a given temperature and pressure), the molar free energy is__________________?

A. More in vapour phase
B. More in liquid phase
C. Same in both the phases
D. Replaced by chemical potential which is more in vapour phase

Read More When liquid and vapour phases of one component system are in equilibrium (at a given temperature and pressure), the molar free energy is__________________?
Thermodynamics for Chemical

The expression for the work done for a reversible polytropic process can be used to obtain the expression for work done for all processes, except reversible _____________ process?

The expression for the work done for a reversible polytropic process can be used to obtain the expression for work done for all processes, except reversible _____________ process?

A. Isobaric
B. Isothermal
C. Adiabatic
D. None of these

Read More The expression for the work done for a reversible polytropic process can be used to obtain the expression for work done for all processes, except reversible _____________ process?
Thermodynamics for Chemical

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__________________?

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

Read More 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__________________?