1.

mg+1/2 o2 ------mgo

Answer» <p>If the heat of formation is a positive value then the reaction requires heat to occur and is called endothermic. If the heat of formation is negative, the reaction is exothermic and releases heat. The formation of MgO from magnesium and oxygen is extremely exothermic and is therefore difficult tomeasuredirectly.</p>


Discussion

No Comment Found