Helmholtz free energy A. is defined as____________________?
A. A = H – TS
B. A = E – TS
C. A = H + TS
D. None of these
Thermodynamics for Chemical
Which of the following is not affected by temperature changes ?
Which of the following is not affected by temperature changes ?
A. Fugacity
B. Activity co-efficient
C. Free energy
D. None of these
Maximum work that could be secured by expanding the gas over a given pressure range is the _____________ work?
Maximum work that could be secured by expanding the gas over a given pressure range is the _____________ work?
A. Isothermal
B. Adiabatic
C. Isentropic
D. None of these
What happens in a reversible adiabatic compression ?
What happens in a reversible adiabatic compression ?
A. Heating occurs
B. Cooling occurs
C. Pressure is constant
D. Temperature is constant
The equation, Cp – Cv = R, is true for _______________ gas?
The equation, Cp – Cv = R, is true for _______________ gas?
A. No
B. Any real
C. Only ideal
D. Both B. and C.
Compound having large heat of formation is_____________________?
Compound having large heat of formation is_____________________?
A. More stable
B. Less stable
C. Not at all stable (like nascent O2)
D. Either more or less stable; depends on the compound
The heat capacities for the ideal gas state depend upon the_________________?
The heat capacities for the ideal gas state depend upon the_________________?
A. Pressure
B. Temperature
C. Both A. & B.
D. Neither A. nor B.
Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of _____________________?
Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of _____________________?
A. Sublimation
B. Fusion
C. Transition
D. Vaporisation
Joule-Thomson co-efficient which is defined as, η = (∂T/∂P)H = 1/Cp (∂H/∂T)P, changes sign at a temperature known as inversion temperature. The value of Joule-Thomson co-efficient at inversion temperature is ___________________?
Joule-Thomson co-efficient which is defined as, η = (∂T/∂P)H = 1/Cp (∂H/∂T)P, changes sign at a temperature known as inversion temperature. The value of Joule-Thomson co-efficient at inversion temperature is ___________________?
A. 0
B. ∞
C. +ve
D. -ve
To obtain integrated form of Clausius-Clapeyron equation, ln (P2/P1) = (ΔHV/R) (1/T1 – 1/T2) from the exact Clapeyron equation, it is assumed that the____________________?
To obtain integrated form of Clausius-Clapeyron equation, ln (P2/P1) = (ΔHV/R) (1/T1 – 1/T2) from the exact Clapeyron equation, it is assumed that the____________________?
A. Volume of the liquid phase is negligible compared to that of vapour phase
B. Vapour phase behaves as an ideal gas
C. Heat of vaporisation is independent of temperature
D. All A , B. & C.