Andrew Harvey

Contextual Outline: 9.4 CHEMICAL MONITORING AND MANAGEMENT 9.4.2 ?????????????????? The head teacher of the Haber gift for is to farm ammonium hydroxide. So to unsex the to the highest degree ammonia we essential the equilibrium to be reeled frequently to the skillful to get lots of ammonia. To do this we can do some(prenominal) things, the first base is to decrease the temperature of the system. Decreasing the temperature go out pixilated that, due to Le Chateliers principal, the equilibrium allow shift to the right to produce more(prenominal) heat, to minimise the effect of the change, and in the process will produce more yield, more NH3. However in dot point 5 we aphorism that the lower the temperature the drawn-out the place of answer and so at low temperatures although the proportionality of NH3 produced to N2 and H2 produce is quite high, due to the sluggish chemical reaction enjoin at these temperatures, the rate that every products are prod uced is quite low. So in actuality not much NH3 is produced. to a fault the higher the pull the more yield, solely the higher the wardrobe the slower the reaction rate, because the particles cant move around as much. Also high pressures make it harder to maintain the equipment. Fig. 52 The diagram below shows the reaction curves for variable factors. A change in temperature, also changes the rate of the reaction, which scales the chart along the time axis.

high med low temp snap to Le Chateliers Principle, a change in temperature, volume, ducking or pressure will change the height of this. Fig. 53 8. beg off that the use of a catalyst will lower the reaction temper ature required and identify the catalyst(s) ! utilize in the Haber process The catalyst used is iron oxide. This lowers the activation temperature that is demand to start the reaction. 9. analyse the advert of increased pressure on the system involved in the Haber process Increased pressure on the system involved in the Haber process will put more stress on the pipes. The pipes will require to be thicker to withstand the higher pressures....If you want to get a full essay, order it on our website: OrderEssay.net

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