CHEM101 Lecture Notes - Lecture 18: Rice Chart, Molar Mass, Ammonia
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If provided with values for all initial and equilibrium values, substitute directly into k formula e. g. if not, use ice table: practice problems see lecture notes. Appreciate effect on equilibrium of temperature change or pressure change manipulating equilibrium. If the temperature of a system as equilibrium is increased, the system reacts to oppose the change (le chatelier): the e(cid:395)uili(cid:271)(cid:396)iu(cid:373) shifts i(cid:374) the di(cid:396)e(cid:272)tio(cid:374) that (cid:272)o(cid:374)su(cid:373)es the (cid:858)heat(cid:859) If the temperature is increased the system acts as if a reactant [r] is added to an endothermic reaction or a product [p] is added to an exothermic reaction. Appreciate the connectivity between delta g and k. Equillibrium and free energy delta g: the bigger the value of k, the more product favoured is the reaction. Ammonia production: n2 and h2 heated over iron catalyst under pressure, then the gases are cooled that that nh3 condenses, removing it. Putting it all together: low temp, high pressure, decrease [nh3, catalyst increase rate.
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