Given, C graphite +` 1/2` O2 = CO; `DeltaH` = -110.5 kJ ---- (i)CO + `1/2` O2 = CO2; `DeltaH ` = -283.2 kJ ---- (ii)The heat of reaction of C graphite + O2 = CO2 is
+172.7 kJ
-393.7 kJ
-172.7 kJ
+393.7 kJ
steps pls