Derive the Relation between CP and CV in Gaseous Systems.
admin Relation between CP and CV in gaseous systems No external work is being done when a gas is heated at constant volume i.e. gas uses all the haet which is…
Show that in an Isothermal Expansion of an Ideal Gas ∆U=0 and ∆H=0
(a) We know that for one mole of an ideal gas, CV = (∂U/∂T) V Therefore, dU = CV dT For a finite change, ∆U = CV ∆T As for…
Calculate q, w, ∆U and ∆H for the reversible isothermal expansion of one mole of an ideal gas at 37oC from a volume of 20dm3 to a volume of 30 dm3
Temperature T = 37oC = 37 + 273 = 310 K Since the process is Isothermal, Therefore, ∆U=0 and ∆H = 0 (as for an isothermal expansion of an ideal…
Discuss the Expansion of an ideal gas and changes in Thermodynamic Properties.
We can calculate the change in change in thermodynamic properties like q , w , ∆U , ∆H with the help of first law of thermodynamics. The expansion can be…
In a certain process, 675 J of heat is absorbed by a system while 290 J of work is done on the system. What is the change in internal energy for the process?
As we know that if the quantity of heat transferred from the surrounding to the system is q and work done in the process is w, then the change in…
In a certain process, 6000 J of heat is added to a system while the system does work equivalent to 9000 J by expanding against the surrounding atmosphere. What is the change in internal energy for the system?
The absorption of heat by the system tends to raise the energy of the system. The performance of work by the system, on the other hand, tends to lower the…
Compare Isothermal Expansion and Adiabatic Expansion
Let us suppose that for an ideal gas, isothermal and adiabatic expansions have initial volume Vi and pressure be Pi to a common final volume Vf. If Piso and Padia…
In a certain process, 600 J of work is done on the system which gives off 250 J of heat. What is the change in internal energy for the process?
The absorption of heat by the system tends to raise the energy of the system. The performance of work by the system, on the other hand, tends to lower the…
The molar heats of combustion of C2H2 (g), C (graphite) and H2 (g) are 210.62 Kcal, 84.05 Kcal and 69.32 Kcal respectively. Calculate the standard heat of formation of C2 H2 (g)
The required equation is 2C + H2 ———-> C2H5 Standard heat of formation i.e. ΔH =? Writing the thermo-chemical equation of the given data (i) C2 H2 + 5/2 O2…
Define Gibbs Free energy and hence Derive the Relationship between Equilibrium Constant and Gibbs free energy and hence Calculate ΔG o for conversion of oxygen to ozone 3/2 O2 (g) ——> O3 (g) at 300 K, if Kp for this conversion is 9.4710-29.
Gibbs free energy: It is the standard free energy which is equal to the difference in free energies of formation of the products and reactants both in their standard states.…