Answer ALL FOUR questions Each question carries marks distributed as shown Graph paper provided D...
Answer ALL FOUR questions Each question carries marks distributed as shown Graph paper provided Data: R - 8.314 K 1. (a) 1 mol of gaseous ethene (C22) is held at a temperature of 425 K in a vessel of volume 1.25 dm" (i) Use the van der Waals equation to calculate the pressure (in Pa) exerted by the gas 15] (ii) Discuss the difference between real gas and perfect gas taking molar volume (in L mol') as an example (iii) Calculate the compression factor Z and explain what force is dominating in the real gas between the attractive or repulsive force. 14] The values of the van der Waals parameters for ethene are a b 5.82 x 102 dm3 mol 4.552 atm dm" mol and (b) Describe the Valence Shell Electron Pair Repulsion Theory and determine the geometry of CH4 using the theory 110] TURN OVER CENG104P
Answer ALL FOUR questions Each question carries marks distributed as shown Graph paper provided Data: R - 8.314 K 1. (a) 1 mol of gaseous ethene (C22) is held at a temperature of 425 K in a vessel of volume 1.25 dm" (i) Use the van der Waals equation to calculate the pressure (in Pa) exerted by the gas 15] (ii) Discuss the difference between real gas and perfect gas taking molar volume (in L mol') as an example (iii) Calculate the compression factor Z and explain what force is dominating in the real gas between the attractive or repulsive force. 14] The values of the van der Waals parameters for ethene are a b 5.82 x 102 dm3 mol 4.552 atm dm" mol and (b) Describe the Valence Shell Electron Pair Repulsion Theory and determine the geometry of CH4 using the theory 110] TURN OVER CENG104P