Respuesta :
We write the equation as:
-368 + -237 = ΔH + -689.9
ΔH = 84.9 kJ/mol
When written outside of the reaction equation, its sign will be reversed.
Thus, ΔH = -84.9 kJ/mol
The third option is correct.
-368 + -237 = ΔH + -689.9
ΔH = 84.9 kJ/mol
When written outside of the reaction equation, its sign will be reversed.
Thus, ΔH = -84.9 kJ/mol
The third option is correct.