Question

Calculate standard internal energy change for the reaction OF2 H2O ---------- O2 2HF at 298K. Standard enthalpy of formation of OF2 is 20 kg/mol and H2O is -250 Kg/mol and HF is -270 kg/mol .

Answer 1

first calculate ehthalpy of r eactants - ehthalpy of products then you will get the value of delta H then substitute in H =U+nRT