Question

Calculate AH for the reaction, 5 C(s) + 6 H2(g) → C5H12(1) given the following information

C5H12(1) + 8 O2(g) → 5 CO2(g) + 6 H2O(g) AH = -3,244.8 kJ
C(s) + O2(g) → CO2(g) AH = -393.5 kJ
2 H2(g) + O2(g) → 2 H2O(g) AH = -483.5 kJ
Select one:
a. 2,367.8 kJ
b. -173.2 kJ
C. -6,662.8 kJ
d. -4,121.8 kJ

Answer 1

b

Step-by-step explanation:

reverse the first reaction

multiply the second by 5

multiply the third by 3

3244.8-1967.5-1450.5=-173.2