human
How many kilojoules are absorbed when 278g of PCl₅ reacts in the equation PCl₅ → PCl₃ + Cl₂?
gpt
89kJ
Explanation: The reaction PCl₅ → PCl₃ + Cl₂ requires an input of energy, indicated by the 89kJ absorbed when 278g of PCl₅ reacts.