Thermite mixtures are used for certain types of welding, and the thermite reaction is highly exothermic.

1.00 mol of granular Fe₂O₃ and 2.00 mol of granular Al are mixed at room temperature (25 °C), and a reaction is initiated. The liberated heat is retained within the products, whose combined specific heat capacity over a broad temperature range is about 0.8 J g^-1 °C^-1. (The melting point of iron is 1530 °C.) Show that the quantity of heat liberated is more than sufficient to raise the temperature of the products to the melting point of iron.

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Fe2O3(s) + 2 Al(s) - Al2O3(s) + 2 Fe(s) A,H° -852 kJ mol-1