In what reaction of the following work is done by the system on the su – InterviewSolution

1.	In what reaction of the following work is done by the system on the surroundings?
Answer» `H_(g_(1)) to Hg_((g))` `3O_(2_(g)) to 2O_(3_((g))` `H_(2_((g)))+Cl_(2_((g))) to 2HCl_((g))` `N_(2_((g)))+3H_(2_((g))) to 2NH_(3_((g)))` ANSWER :A

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