4.23 Determine the standard heat of each of the following reactions at 25 degrees celsius for the following parts

(j) CO2(g)+3H2(g)CH3OH(g)+H2O(g) (k) CH3OH(g)+21O2(g)HCHO(g)+H2O(g) (l) 2H2S(g)+3O2(g)2H2O(g)+2SO2(g) (m) H2S(g)+2H2O(g)3H2(g)+SO2(g) (n) N2(g)+O2(g)2NO(g) (o) CaCO3(s)CaO(s)+CO2(g) (p) SO3(g)+H2O(l)H2SO4(l) (q) C2H4(g)+H2O(l)C2H5OH(l) (r) CH3CHO(g)+H2(g)C2H5OH(g)