C
Corky Cacas
hey, i need help with this question guys?
Given:
Fe(s) + H2O(g) --------> FeO(s) + H2(g) Delta H= -24.7KJ
2FeO(s) + 1/2 O2(g) --------> Fe2O3(s) Delta H= -289.2
H2(g) + 1/2 O2(g) ----------> H2O (g) Delta H= -241.8
Calculate Enthalpy change:
2Fe(s) +3H2O(g) ------>Fe2O3(s) + 3H2(g)
a. -96.8KJ
b. +96.8KJ
c. -72.1KJ
d. 72.1KJ
e.-580.4KJ
I calculate it in the following:
2(-24.7) + (-289.2) + 3(241.8)= which is not one of the answers.
this is a question on Achiever test 3 gchem.
the correct answer is A. but i get something else. any help?
Given:
Fe(s) + H2O(g) --------> FeO(s) + H2(g) Delta H= -24.7KJ
2FeO(s) + 1/2 O2(g) --------> Fe2O3(s) Delta H= -289.2
H2(g) + 1/2 O2(g) ----------> H2O (g) Delta H= -241.8
Calculate Enthalpy change:
2Fe(s) +3H2O(g) ------>Fe2O3(s) + 3H2(g)
a. -96.8KJ
b. +96.8KJ
c. -72.1KJ
d. 72.1KJ
e.-580.4KJ
I calculate it in the following:
2(-24.7) + (-289.2) + 3(241.8)= which is not one of the answers.
this is a question on Achiever test 3 gchem.
the correct answer is A. but i get something else. any help?