- A7 At 500 K The Molar Volume Vm Of A Hydrocarbon May Be Estimated From Pvm Rt 1 0 005p P In Bar 0 P 100 I 1 (155.46 KiB) Viewed 108 times
A7. At 500 K the molar volume (Vm) of a hydrocarbon may be estimated from: PVm/RT = 1 -0.005P (P in bar; 0 < P < 100) (i) What type of equation of state is this and how would it change if it was to be used at a different temperature? [1 mark] (ii) Sketch a diagram of the compression factor for the gas over a pressure range of 0 to 1000 bar to illustrate a typical and expected trend. Briefly explain the trend. [2 marks] (iii) Calculate the fugacity of the gas at 100 bar. Give an example when fugacity information would be needed in thermodynamic calculations. [4 marks] Part B (20%): B1. You are to design a concept map on the topic of Gibbs energy. Information on what a concept map is, how to make one (see the video) and even a free download for software to draw one, can be found here (Imperial College London website). Your map should clearly demonstrate how the different concepts related to Gibbs energy are connected. Your map should act as a concise overview for students new to the subject and as a revision aide. The map should also be practical for the selection of relevant equations for specific problems. The assessment of your concept map will be based on the following attributes: a) Range of relevant concepts (40%) b) Quality of descriptors connecting the concepts (i.e. demonstration of a good understanding of the topic) (40%) c) Presentation quality for the intended audience (20%) Note: hand written maps are permitted.