Question

How much heat (in kilojoules) is evolved or absorbed in the reaction of 2.85 g of Fe₂O₃ with enough carbon monoxide to produce iron metal?

Answer 1

The enthalpy change for the reaction when 1 mole of FeCl₂(s) is produced is 338 kJ/mol.

Step-by-step explanation:

The enthalpy change for the reaction can be calculated using the given information. First, we need to determine the moles of FeCl₂(s) produced. The molar mass of FeCl₂ is 126.75 g/mol, so by dividing 3.22 g by the molar mass, we get 0.0254 mol of FeCl₂.

Next, we divide the heat produced (8.60 kJ) by the number of moles of FeCl₂ to find the enthalpy change per mole. Therefore, the enthalpy change for the reaction when 1 mole of FeCl₂(s) is produced is 338 kJ/mol.