Gegewe die volgende data: / Given the following data: (i) Ca(s) + 2C(grafite) CaC2(s) H = -62.8 kJ (ii) Ca(s) + O2(g) CaO(s) H = -635.5 kJ (iii) CaO(s) + H2O(l) Ca(OH)2(aq) H = -653.1 kJ (iv) C2H2(g) + 5/2O2(g) 2CO2(g) + H2O(l) H = -1300.0 kJ (v) C(grafite) + O2(g) CO2(g) H = -393.5 kJ Bereken H vir die volgende reaksie, deur van Hess se wet en manipulasie van die gegewe reaksies gebruik te maak. / Calculate H for the following reaction by using Hess's law and manipulating the given reactions: CaC2(s) + 2H2O(l) Ca(OH)2(aq) + C2H2(g) H =