Answer: The amount of heat released is 462.3 kJ
Explanation:
The chemical equation for the reaction of manganese and oxygen to produce manganese (II,III) oxide follows:
[tex]3Mn(s)+2O_2(g)\rightarow Mn_3O_4(s);\Delta H^o_{rxn}=-1387kJ[/tex]
We need to calculate the amount heat released for 1 mole of manganese.
To calculate the amount of heat released, we use unitary method:
When 3 moles of manganese is burnt, the amount of heat released is 1387 kJ
So, when 1 mole of manganese is burnt, the amount of heat released will be = [tex]\frac{1387}{3}\times 1=462.3kJ[/tex]
Hence, the amount of heat released is 462.3 kJ
