Perhatikan reaksi berikut! (1) N_(2(g))+O_(2(g)) -> 2

Perhatikan reaksi berikut! (1) N_(2(g))+O_(2(g)) -> 2 NO_((g)) Delta H=+180,5 ~kJ / mol (2) 2 C(s)+H_(2(g)) -> C_(2) H_(2(g)) Delta H=+225 ~kJ / mol (3) N_(2(g))+3 H_(2(g)) -> 2 NH_(3(g)) Delta H=-92 ~kJ / mol (4) 2 Na_( {(s) ))+2 H_(2) O_( {(l) )) -> 2 NaOH_( {(aq) ))+H_(2 { (g) )) Delta H=-367,5 ~kJ / mol (5) C_((s))+O_(2(g)) -> 2 CO_(2(g)) Delta H=-393 ~kJ / mol Reaksi yang termasuk reaksi endoterm adalah nomor ....