Asample of gaseous pcl5 was introduced into an evacu- ated flask so that the pressure of pure pcl5 would be 0.50 atm at 523 k. however, pcl5 decomposes to gaseous pcl3 and cl2, and the actual pressure in the flask was found to be 0.84 atm. calculate kp for the decomposition reaction pcl5(g) 34 pcl3(g) 1 cl2(g) at 523 k. also calculate k at this temperature.

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.

hypostyle hall;