Final answer:
Chemical Reactions and Heat To calculate the heat consumed in a chemical reaction, the specific enthalpy change must be known. With the enthalpy change and molar mass, you can find out the heat consumed for a specific amount of reactant. The heat of reaction is typically provided in kJ/mol.
Step-by-step explanation:
Given that the initial weight of PCl₃ is 765g, to calculate the heat consumed in the reaction, you must first identify the heat of reaction. Heat of reaction or enthalpy change is generally provided in kJ/mol.
But without the specific heat of reaction of PCl₃ to PCl₅ and Cl₂, it's not possible to calculate the exact heat consumed for 765g of PCl₃. If you have the heat of reaction, you then calculate the number of moles of PCl₃ using its molar mass. Afterwards, you multiply the number of moles by the enthalpy change to get the heat consumed.
To calculate the heat consumed in a chemical reaction, the specific enthalpy change must be known. With the enthalpy change and molar mass, you can find out the heat consumed for a specific amount of reactant. The heat of reaction is typically provided in kJ/mol.
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