In an adiabatic process, no transfer of heat takes place between system and surrounding. Choose the correct option for free expansion of an ideal gas under adiabatic condition from the following.

SI unit of Boltzmann's constant is

For the complete combustion of ethanol, $${C_2}{H_5}OH(I) + 3{O_2}(g) \to 2C{O_2}(g) + 3{H_2}O(I)$$, the amount of heat produced as measured in bomb calorimeter is 1364.47 kJ mol^$$-$$1 at 25$$^\circ$$C. Assuming ideality the enthalpy of combustion, $$\Delta$$H_C, for the reaction will be (R = 8.314 JK^$$-$$1 mol^$$-$$1)

The incorrect expression among the following is