Calculate ΔH° for the following reaction: AgBr(s) + 1/2 I2(s) → AgI(s) +1/2 Br2(g), Given that ΔHf° for
AgI(s), Br2(g), and AgBr(s), are –61.8 kJ/mol, 30.8 kJ/mol, and –100.4 kJ/mol, respectively.
(1) 54.0 kJ (2) -69.4 kJ (3) -131.4 kJ (4) 38.6 kJ