1. What are the three raw materials in the Haber Process? 2. Give four uses of ammonia. 3. Look at the information in Table 1. What would be the effect on the yield of ammonia on decreasing the temperature? Table 1 Pressure (atm) NH3 present at equilibrium ( % ) 100 C 200 C 300 C 40390 C 5010 C 700 C _ 507 147 0-2 _ 97 - . 15. 3 1.1 . . | 25.2 2.2 . . 38.8 . - 2Erl:-Its- 12.9 4. Draw a graph of the data shown' 1n table 1 with percentage conversion to NH3 on the yaxis and pressure in atmospheres on the X- axis. Draw separate lines on the same graph for the six different temperatures. 5. Suggest why the process is not operated at even lower temperatures. 6. What is the ratio of nitrogen to hydrogen, by volume, of the gases entering the catalyst chamber? 7. What practical reasons can you think of for not using very high pressure? 3- The 130111118 POil'ltS 0f N2, H2 and NH 3 are 495C, -253 C and 33C respectively. How do you think the ammonia could be separated from unreacted nitrogen and hydrogen? 9. The boiling points of these gases are higher at higher pressure. Use your knowledge of particles to explain this