JAMB Chemistry 1987 Question 27

Tetraoxosulphate (VI) acid is prepared using the chemical reaction SO_3(g) + H₂O_(l) → H₂SO_4(l). Given the heats of formation for SO_3(g), H₂O_(l) and H₂SO_4(l) as −395 kJ mol⁻¹, −286 kJ mol⁻¹ and −811 kJ mol⁻¹ respectively, the enthalpy change accompanying this reaction is

1. A.−1032 kJ
2. B.−130 kJ
3. C.+130 kJ
4. D.+1032 kJ