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A cyclindrical container of volume 44...

A cyclindrical container of volume `44.8 litres` is containing equal no.of moles (in integer no. ) of an ideal
monoatomic gas in two sections A and B separeted by an adiabatic frictionless piston as show in figure
The initinal temperature and pressure of gas in both section B becomes `(1//8)^(th)` of initial volume .

Given : `R = 2 cal //"mole -K", C_(v,m)` of monoatmic gas `=(3)/(2)R`,
At 1 atm & `0^(@)` ideal gas occupy `22.4 liter`.
Change in enthalpy for section A in K cal.

A

48.3

B

80.53

C

4.83

D

8.05

Text Solution

Verified by Experts

The correct Answer is:
B
`DeltaH = nC_(p)DeltaT`
In A no. of mole =`(PV)/(RT)= 10` lt brgt `DeltaH= 10 xx (5)/(2) xx 2[1638-27.3]`
=`80535 cal = 80.535 K cal`
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