Phosphorus trichloride reacts with water according to thefollowing equation.
PCl3(l)+ 3H2O --> H3PO3(aq) + 3HCl(aq)
A 2.10-g sample of PCl3(l) reacted with excess H2O(l) in acalorimeter. The temerature rose from 20.55oC to30.30oC. The heat capcity of the calorimeter andcontents is 427 J/oC. What is the enthalpy change forthe given reaction?