Thermite reactions are highly exothermic reactions between a metal oxide and a fine metal powder. The exothermic nature

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Thermite Reactions Are Highly Exothermic Reactions Between A Metal Oxide And A Fine Metal Powder The Exothermic Nature 1 (46.44 KiB) Viewed 47 times

Thermite reactions are highly exothermic reactions between a metal oxide and a fine metal powder. The exothermic nature of the reaction is used for welding metal parts such as railway tracks. One hypothetical reaction of this type is: A,O3(s) + 2B(s) B2O3(s) + 2 A (8) of the surroundings absorb 797.0 kJ/mol of heat due to the reaction, answer the following questions using the table of data provided below (determined at 298 K): Molecule SJK 'mol) A2O3(s) 83.1 B(5) 25.4 B203 (s) 58.8 A(S) 30.5 a) Determine ASX for the reaction at 298 K AS : JK-'mol b) What is the value of AS for the reaction at 298 K AS JK 'mol