2NO_(2)(g)to N_(2)O_(4)(g) DeltaU_(f)^(@)[N_(2)O_(4)(g)]=2kcal//"moleand "DeltaU_(reaction)^(@)=-16kcal//mol, then calculate DeltaH_("formation" )^(@)=-16kcal//mol,then calculate DeltaH_("formation")^(@) of NO_(2)at 727^(@)C:

2NO_(2)(g)to N_(2)O_(4)(g) DeltaU_(f)^(@)[N_(2)O_(4)(g)]=2kcal//"molea

1.	2NO_(2)(g)to N_(2)O_(4)(g) DeltaU_(f)^(@)[N_(2)O_(4)(g)]=2kcal//"moleand "DeltaU_(reaction)^(@)=-16kcal//mol, then calculate DeltaH_("formation" )^(@)=-16kcal//mol,then calculate DeltaH_("formation")^(@) of NO_(2)at 727^(@)C:
Answer» <html><body><p>9kcal/mol<br/>4.5kcal/mol<br/>8kcal/mol<br/>10kcal/mol</p>Answer :<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a></body></html>