Using the thermochemical reaction below, what is the enthalpy of reaction in which sulfur dioxide is oxidized to sulfur trioxide (25O218) + O2(6) 2503(e)) ? [A] -196 [B] -543 [C] 1087 [D] 196 25(s) + 302(g) 2503(e) AH = -790 kJ S(s) + O2(g) SOz() AH = -297 kJ