Answer : The heat released per gram of the compound reacted with oxygen is, 71.915 kJ
Solution :
The balanced chemical reaction is,
The expression for enthalpy change is,
where,
n = number of moles
Now put all the given values in this expression, we get
Now we have to calculate the heat released per gram of the compound reacted with oxygen.
As we know that,
1 mole of has 63.12 grams of mass
So, 2 mole of has grams of mass
As, 126.24 g of release heat = 9078.57 kJ
So, 1 g of release heat =
Therefore, the heat released per gram of the compound reacted with oxygen is, 71.915 kJ