Notifications
Clear all
0
03/10/2021 1:04 pm
Topic starter
The free energy change for the following reactions are given below,
C2H2(g) + 5/2O2(g) → 2CO2(g) + H2O(l); ΔG° = -1234 kJ
C(s) + O2(g) → CO2(g); ΔG° = -394 kJ
H2(g) + 1/2O2(g) → H2O(l); ΔG° = -237 kJ
What is the standard free energy change for the reaction H2(g) + 2C (s) → C2H2(g)
(a) -209 kJ
(b) -2259 kJ
(c) +2259 kJ
(d) 209 kJ
1 Answer
0
03/10/2021 1:05 pm
Correct answer: (d) 209 kJ
Explanation:
By 2× (ii) – (i) + (iii)
H2(g) + 2C (s) → C2H2(g), ΔG° = 209 kJ