Determine  which of the following  reactions at  constant pressure represent  surrounding that do
Channel: Doubtnut
Date: 2020-04-19

Determine  which of the following  reactions at  constant pressure represent  surrounding that do work on the system  environment :   (P)  `4NH_(3)(g) + 7O_(2)(g) to  4  NO_(2)+ 6H_(2)O(g)`    (Q)  `CO.O(g)+ 2H_(2)(g) to CH_(3)OH(l)`      (R) `C("s,graphite")+H_(2)O(g)  to CO(g)+H_(2)(g)`    (S) `H_(2)O(s) to H_(2)O(l)`