Chemistry Practice Problems Mass Defect Practice Problems Solution: The thermite reaction, Fe2O3(s) + 2Al(s)  →  2Fe(s...

⚠️Our tutors found the solution shown to be helpful for the problem you're searching for. We don't have the exact solution yet.

Solution: The thermite reaction, Fe2O3(s) + 2Al(s)  →  2Fe(s) + Al2O3(s), Ho= -851.5kJ/mol, is one of the most exothermic reactions known. Because the heat released is sufficient to melt the iron product, the reaction is used to weld metal under the ocean.How does this amount of thermal energy compare with the energy released when 2 mol of protons and 2 mol of neutrons combine to form 1 mol of alpha particles?Hint: The mass of a proton is 1.0072765 amu, the mass of a neutron is 1.0086649 amu, and the mass of a helium nucleus is 4.0015 amu.

Problem

The thermite reaction, Fe2O3(s) + 2Al(s)  →  2Fe(s) + Al2O3(s), Ho= -851.5kJ/mol, is one of the most exothermic reactions known. Because the heat released is sufficient to melt the iron product, the reaction is used to weld metal under the ocean.

How does this amount of thermal energy compare with the energy released when 2 mol of protons and 2 mol of neutrons combine to form 1 mol of alpha particles?

Hint: The mass of a proton is 1.0072765 amu, the mass of a neutron is 1.0086649 amu, and the mass of a helium nucleus is 4.0015 amu.