MEDIUM
NEET
IMPORTANT
Earn 100

A piece of NH4Cl is kept inside a balloon filled with some air, having thermally insulated walls. The temperature is kept just above sublimation temperature of NH4Cl.

NH4Cl (s) sublime NH3 (g)+HCl (g).

Which of the following is correct regarding this?

Question Image

100% studentsanswered this correctly

Important Questions on Thermodynamics

EASY
NEET
IMPORTANT
2 moles of an ideal gas is expanded isothermally and reversibly from 1 litre to 10 litre. Find the enthalpy change in kJ mol-1.
EASY
NEET
IMPORTANT
The magnitudes of enthalpy changes for irreversible adiabatic expansion of a gas from 1 L to 2 L is ΔH, and for reversible adiabatic expansion for the same expansion is ΔH2. Then
HARD
NEET
IMPORTANT
A certain mass of gas is expanded from (1 L, 10 atm) to (4 L, 5 atm) against a constant external pressure of 1 atm. If initial temperature of gas is 300 K and the heat capacity of process 50 J/C. Then the enthalpy change during the process is (1 L atm 100 J)
HARD
NEET
IMPORTANT

A given mass of gas expands from the state A to the state B by three paths 1,2 and 3 as shown in the figure. If w1, w2 and w3, respectively be the magnitudes work done by the gas alonq three paths then 

Question Image

MEDIUM
NEET
IMPORTANT
One mole of a non-ideal gas undergoes a change of state (2.0 atm, 3.0 L, 95 K) (4.0 atm, 5.0 L, 245 K) with a change in internal energy, ΔU = 30.0 L atm. The change in enthalpy (ΔH) of the process in L atm is
EASY
NEET
IMPORTANT
One mole of an ldeal monoatomic gas at temperature T and volume 1 L expands to 2 L against a constant external pressure of one atm under adiabatic conditions, then final temperature of gas will be:
EASY
NEET
IMPORTANT
An isolated system comprises the liquid in equilibrium with vapours. At this stage the molar entropy of the vapour is: