Question

Skiers trapped by snowstorms use heat packs to keep warm. The heat may be generated by the
reaction below.
4Fe(s) + 302(g) → 2Fe2O3(s)
;
AHO = -1648 kJ
What is the standard enthalpy change of formation of iron(III) oxide?
A OKJ molt
B -824 kJ molt
C-1648 kJ mol
D-3296 kJ mol-1​

Answer 1

For NaCl, lattice energy = - 186 Kcal/mol, the salvation energy of Na + and Cl - are

-97 and -85 kcal/mole respectively. Therefore for NaCl ( s )

Ans :

4 kcal/mol

But I want a detailed soln plz explain

Answer 2

Answer:

i have nothing to say today so today u tell me something!!