Given the reactions (1) and (2) below, determine
(a) ∆Ho and ∆Uo for reaction (3),
(b) -∆Ho for both HI (g) and H20 (g) all at 298 K.
(1) H2 (g) + I2(s) → 2 HI (g)
∆, H" = +52.96 kJ mol-1
(2) 2 H2 (g) + 02(g) → 2 2 H20 (g)
∆, H= -483.64 k] mol-1
(3) 4 HI (g) + 02(g) → 2 I2(s) + 2 H2O (g)