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1、Review1The standard Gibbs energy of reaction in solution the standard Gibbs energy formation( 标准生成吉布 斯自由能) the standard reaction Gibbs energy(反应的标准吉布 斯自由能变) 1 The solvent and solute need distinguish and the solution is dilute(稀溶液). The standard state of each reactant and product is ci = 1mol.dm-3 an
2、d the solution submit Henrys law hypothetical. = + c denote the saturated solubility of each solute 22 The response of equilibria to the conditions1How equilibria respond to pressure The standard equilibrium constant is independent of the pressure, but the equilibrium composition depends on the pres
3、sure.3 Le Chateliers principle: A system at equilibrium, when subjected to a disturbance, responds in a way that tends to minimize the effect of the disturbance. 42 effect of inert gas(惰性气体) on equilibrium 1. If an inert gas is added to an equilibrium mixture of gases at constant temperature and vol
4、ume, there is no effect on the equilibrium. 2. If adding an inert gas at constant temperature and pressure which has the same effect as lowering the original gas partial pressure. 53 The response of equilibria to temperature The van t Hoff equation is an expression for the effect of temperature on the standard equilibrium constant Ko. Here is the standard reaction enthapy at the temperature T.6 (1) If varies only slightly with temperature (2) If depends on temperature, 7 Specially, when the heat capacities(热容
