Question

1 mole of gas occupying 3L volume is expanded against a constant external pressure of 1 atm to a volume of 15 L. The work done by a system is equal to

(a) -1.215 x 10³J 

(b) -12.15 x 10³J 

(c) +1.215 x 10³J 

(d) +12.15 x 10³J

Answer 1

Correct option (a) -1.215 x 10³J 

Explanation:

As work is done against constant external pressure, the process is irreversible.