Question 1
Use the standard reaction enthalpies given below to determine DrH° for the following reaction:2S(s) + 3O2(g) → 2SO3(g) | DrH° = ? |
SO2(g) → S(s) + O2(g) | DrH° = +296.8 kJ |
2SO2(g) + O2(g) → 2SO3(g) | DrH° = -197.8 kJ |
Question 2
Use the standard reaction enthalpies given below to determine DrH° for the following reaction:4SO3(g) → 4S(s) + 6O2(g) | DrH° = ? |
SO2(g) → S(s) + O2(g) | DrH° = +296.8 kJ |
2SO2(g) + O2(g) → 2SO3(g) | DrH° = -197.8 kJ |
Answer 1
-791.4 kJ mol-1Answer 2
1583 kJ mol-1