Pages

▼
Showing posts with label THERMODYNAMICS:. Show all posts
Showing posts with label THERMODYNAMICS:. Show all posts
Sunday, December 22, 2024

A gas absorbs 100 J of heat and is simultaneously compressed by a constant external pressure of 1.50 atmospheres from a volume of 8 L to 2 L. E will be

›
 

One mole of an ideal gas at 300Kis expanded isothermally from an initial volume of 1 litre to 10 litres. (R = 2 cal mol^–1 K^–1). E for the process is

›
 

Calculate the work performed when 2 moles of hydrogen expand isothermally and reversibly at 25ºC from 15 to 50 litres.

›
 

A gas absorbs 200J of heat and expands against the external pressure of 1.5 atm from a volume of 0.5 litre to 1.0 litre, Calculate the change in internal energy-

›
 

The internal energy of one mole of a gas is

›
 

A system does 100J work on surroundings by absorbing 150J of heat. Calculate the change in internal energy-

›
 

A sample of gas is compressed by an average pressure of 0.50 atmosphere so as to decrease its volume from 400 cm^3 to 200 cm3^.During the process 8.00 J of heat flows out to surroundings. Calculate the change in internal energy of the system.

›
 

A sample of an ideal gas undergoes a process (4 atm, 40 L) to (1 atm, 150 L). If the internal energy of gas decreases by 10 L-atm, H for the gas is

›
 

5 moles of an ideal gas (Cp,m= 2/7 R) is heated from 27ºC to 87ºC. The value of H is.

›
 

90 gm water is completely converted into stream at 100ºC and 1 atm. The internal energy of system (latent heat of vaporisation of water at 100ºC= 540 cal/gm)

›
 

Two moles of an ideal monoatomic gas is heated from 27ºC to 127ºC.The change internal energy of gas is:

›
 

500 gm ice at 0ºC is added in 2000 gm water at tºC. If the final temperature of system is 0ºC, then the value of 't' is (latent heat of fusion of ice =80 cal/gm and specific heat capacity of water= 1 cal/gm-ºC)

›
 

2 moles of an ideal gas absorbs 720 cal heat when heated from 27ºC to 87ºC, at constant volume. 'Cp/Cv' for the gas is :

›
 

Five moles of a monoatomic ideal gas is heated from 300 K to 400 K at constant pressure. The amount of heat absorbed is :

›
 

Calculate the amount of heat required to raise the temperature of 50 gm water from 25ºC to 55ºC. Specific heat capacity of water = 4.2 J/ºC-gm.

›
 

One mole of argon gas (assuming ideal behaviour) is expanded reversibly and adiabatically from 2.5 m^3 at 300K temperature to 5.0 m^3. Cv m for argon is 12.55 JK^–1mol^–1.Calculate the final temperature and pressure of the gas.

›
 

Two mol of an ideal gas is expanded isothermally and reversibly at 300K to twice the original volume. Calculate q, w, E, and H.

›
 
Wednesday, December 18, 2024

Heat, Heat Exchange and Heat capacity (C) :

›
Heat is defined as the energy that flow into or out of the system because of a difference in temperature between system and surrounding. Not...

Degree of Freedom and Law of Equipartion of Energy:

›
It is equal to number of modes of energy transfer when a gaseous molecule undergoes collision.                      OR         It represent ...

Extensive properties

›
T he parameter  whose value change on division known as extensive properties and these are depends on the mass (size, quantity) of the syste...