Ahydrocarbon feed consist of a mixture of propane [c3h8] (20 mol%), isobutene [c4h10] (30 mol%), isopentane [c5h12] (20 mol %) and n-pentane [c5h12] (30 mol%) is fractioned at a rate of 100 kg/h into a distillate that contains all the propane and 78% of the isopentane in eng142 concepts of chemical engineering the feed. the mole fraction of isobutane in the distillate is 0.378. the bottom stream contains all the n-pentane feed to the unit. a) develop a block diagram of the process. (5 marks) b) calculate the flow rate at the bottom stream. (30 marks) c) on a table show the material balance of the unit.

they are made of gases.

they have a spherical shape.

they make energy through fusion.

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.