Home
Class 12
CHEMISTRY
A gas expands against a variable pressur...

A gas expands against a variable pressure given by `P=(20)/(V)` bar. During expainsion from volume of `1` litre to `10` litre, the gas undergoes a change in internal energy of `400 J`. Heat absorbed by the gas during expansion ( in `KJ`):

Text Solution

Verified by Experts

(5065.8)
dW = -pdv = `(20)/(v) xx dv = 20 `int_(1)^(10)(dv)/(v) = 20 In 10 = -46.06 Latm = - 4665.878J , Delta U = 400J`
Using first law of thermodynamics Q = 5065.878 J
Promotional Banner

Similar Questions

Explore conceptually related problems

A gas expands slowely against a variable pressure given by p=(10)/(V) bar, where V is the volume of gas at each stage of expansion. During expansion from volume 10 L to 100 L the gas undergoes an increase in internal energy of 400 J. How much heat is absorbed by gas during expansion ?

What happens to the change in internal energy of a gas during adiabatic expansion?

A gas expands isothermally from 1 litre to 10 litre at constant in internal energy of the system durin the opetation is

A gas of volume changes 2 litre to 10 litre at constant temperature 300K, then the change in internal energy will be :

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.

An ideal gas expand against a constant external pressure at 2.0 atmosphere from 20 litre to 40 litre and absorb 10kJ of energy from surrounding . What is the change in internal energy of the system ?