Question

A gas expands against a constant external pressure so that the work done is 607.8J. The work done in litre atmosphere is:

• A. 7 L.atm
• B. 6570 L.atm
• C. 6 L.atm
• D. none of these

Answer 1

The correct option is C 6 L.atm

• The joules unit number 101.33 J converts to 1 L atm, one Litre-atmosphere. It is the equal energy value of 1 Litre-atmosphere but in the joules energy unit alternative.
  
• So, $\frac{607.8}{101.33}=6L.atm$