Question

One mole of a gas expands by 3 L against a constant pressure of 3 atm. Calculate the work done in Joule.
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Answer 1

Work done will be -- 911.925 J

Work done on gas can be defined as the amount of energy required to change the state of gas. It is given by the formula -

W = P∆V

W denotes work done, p denotes pressure and ∆V refers to change in volume.

Given in question, p is 3 atm and volume changes by 3 l.

Now keeping the values in equation-

W = 3*3

W = 9 L atm

1 l atm = 101.325 J

9 l atm will be 101.325*9 = 911.925 J

Hence, work done = 911.925 J