Dynamic Equilibrium - NUI Galway National University of Ireland 动态平衡高威的爱尔兰国立大学.pptVIP

下载本文档

1
0
约2.19千字
约 10页
2018-06-24 发布于四川
举报
版权申诉

Dynamic Equilibrium - NUI Galway National University of Ireland 动态平衡高威的爱尔兰国立大学.ppt

1、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。。
2、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
4、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
5、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
6、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
7、VIP文档为合作方或网友上传，每下载1次，网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档

Dynamic Equilibrium - NUI Galway National University of Ireland 动态平衡高威的爱尔兰国立大学

Dynamic EquilibriumChapter 15 Le Chatelier’s Principle When a dynamic equilibrium is upset by a disturbance, the system responds in a direction that tends to counteract the disturbance and, if possible, restore equilibrium Le Chatelier’s Principle When a dynamic equilibrium is upset by a disturbance, the system responds in a direction that tends to counteract the disturbance and, if possible, restore equilibrium Chemical Equilibrium CH3COOH + H2O ?H3O++CH3COO- Equilibrium Lawsimple relationship between molar concentrations (or pressures) of reactants and products at equilibrium Heterogeneous Equilibria(involving more than one phase) Equilibrium Law for Gaseous Reactions Predicting direction of equilibrium changes(Le Chatelier redux) * Example liquid + heat ?vapour an endothermic physical change liquid + heat ? vapour Increase the temperature (add heat) liquid + heat ? vapour Liquid evapourates to absorb the added heat and the position of the equilibrium shifts to the right For a given composition of a system, equilibrium is independent of which side you approach it from…..reactions are REVERSIBLE N2O4(g) ? 2NO2(g) Cinit 0.0350 mol 0 or 0 0.0700 mol Cequil 0.0292 mol 0.0116 mol H2(g) + I2(g) ? 2HI(g) (at 440C) Mass action expression: Where Q is the reaction quotient LAW: at equilibrium the reaction quotient is equal to the equilibrium constant, K. In general for dD + eE ? gG + hH For gaseous reactions use partial pressures, P, to give an equilibrium constant (Kp) The Magnitude of Equilibrium Constants The equilibrium constant, K, is the ratio of products to reactants. Therefore, the larger K the more products are present at equilibrium. Conversely, the smaller K the more reactants are present at equilibrium. If K 1, then products dominate at equilibrium and equilibrium lies to the right. If K 1, then reactants dominate at equilibrium and the equilibrium lies to the left. Adding or removing reactant or product Cu(H2O) 42+ (aq.) + 4Cl-(aq.) ?CuC