How much heat is released if 25 g of iron undergoes the thermite reaction shown below:

2Al+Fe2O3-->Al2O3+2Fe+852KJ

Quote from: prasamb@yahoo.com on October 28, 2022, 08:40:08 AM
How much heat is released if 25 g of iron undergoes the thermite reaction shown below:

2Al+Fe2O3-->Al2O3+2Fe+852KJ

The amount of energy released for 2 moles of Fe formation is 825kJ.
Now you convert 25 g Fe  to moles of Fe and then to kJ of energy using above moles of Fe to kJ ratio.
25 g  Fe * 1mol of Fe / 56 g Fe * 825 kJ / 2 mol Fe