1.

Thermodynamic process differ based on the manner in which it is carried out. 1. Distinguish between reversible and irreversible processes. 2. Calculate the amount of work done when 2 moles of a gas expands from a volume of 2 L to 6 L isothermally and irreversibly against a constant external pressure of 1 atm.

Answer»

1. 

 Reversible process Irreversible process
 (1) Which can be reversed (1) Which cannot be reversed spontaneous process
 (2) Takes place infinitesimally slowly (2) Takes place spontaneous
 (3) Work done maximum (3) Work done minimum

2. w = -p∆V = -1 × (6 – 2) 

= – 4 L atm



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