Answer is: 1160 kJ/mol, endothermic.
the change in enthalpy = the total bonding energy for the products of a reaction - the bonding energy of the reactants.
the change in enthalpy = 2535 kJ/mol - 1375 kJ/mol.
the change in enthalpy = 1160 kJ/mol.
There are two types of reaction:
1) endothermic reaction (chemical reaction that absorbs more energy than it releases).
2) exothermic reaction (chemical reaction that releases more energy than it absorbs).
