Self-Test Worksheet for Thermodynamics Section (Quiz
... ∆G° = [(2 mol)(-16.7 kJ/mol)] – [0] = -33.4 kJ (b) Use ∆G° = ∆H° - T∆S° ∆S° = (∆H – ∆G) / T = [(-92.4 kJ) - (-33.4 kJ)] / (298 K) ∆S° = -0.198 kJ/K = -198 J/K (c) Use ∆G° = ∆H° - T∆S° From (b), ∆S° is negative, so increasing the temperature increases the value of ∆G°, making the reaction less sponta ...
... ∆G° = [(2 mol)(-16.7 kJ/mol)] – [0] = -33.4 kJ (b) Use ∆G° = ∆H° - T∆S° ∆S° = (∆H – ∆G) / T = [(-92.4 kJ) - (-33.4 kJ)] / (298 K) ∆S° = -0.198 kJ/K = -198 J/K (c) Use ∆G° = ∆H° - T∆S° From (b), ∆S° is negative, so increasing the temperature increases the value of ∆G°, making the reaction less sponta ...
Corrections to Noggle, Physical Chemistry, 3rd Edition, 1st Printing
... matter how many entries there were, it would be incomplete! The quantities reported in tables are intensive quantities, often on a molar basis (although they are sometimes given on a weight basis). These tabulations have units of kJ/mol for the values of reaction enthalpies because this quantity ind ...
... matter how many entries there were, it would be incomplete! The quantities reported in tables are intensive quantities, often on a molar basis (although they are sometimes given on a weight basis). These tabulations have units of kJ/mol for the values of reaction enthalpies because this quantity ind ...
AP Chemistry Syllabus
... results mean. Graphs should have a title and labeled axes. 9. Post-lab Questions Same as pre-lab questions 10. Conclusion and Error Analysis This is not a summary of results or procedure. It must state what was learned, such as a scientific principle, based on the purpose of the lab. It also include ...
... results mean. Graphs should have a title and labeled axes. 9. Post-lab Questions Same as pre-lab questions 10. Conclusion and Error Analysis This is not a summary of results or procedure. It must state what was learned, such as a scientific principle, based on the purpose of the lab. It also include ...
University Studies Chem. 414 Math
... Chemistry is the science of matter and the changes matter can undergo. Physical chemistry deals with the physical principles underlying chemistry and seeks to account for the properties of matter (such as atoms, electrons, and energy) in terms of fundamental concepts. It provides the basic framework ...
... Chemistry is the science of matter and the changes matter can undergo. Physical chemistry deals with the physical principles underlying chemistry and seeks to account for the properties of matter (such as atoms, electrons, and energy) in terms of fundamental concepts. It provides the basic framework ...
Document
... An endothermic reaction is endothermic at all temperatures. You should think of heat as ________________for endothermic reactions and as ________________ for exothermic reactions. B. Le Châtelier's principle - add heat to an equilibrium mixture, net reaction occurs in the direction that reli ...
... An endothermic reaction is endothermic at all temperatures. You should think of heat as ________________for endothermic reactions and as ________________ for exothermic reactions. B. Le Châtelier's principle - add heat to an equilibrium mixture, net reaction occurs in the direction that reli ...
Keq Assignment
... 4. For each of the following equilibrium systems, identify whether the reactants or products are favored at equilibrium, or whether they are equally favored. a) COCl2 (g) ↔ CO(g) + Cl2 (g) ...
... 4. For each of the following equilibrium systems, identify whether the reactants or products are favored at equilibrium, or whether they are equally favored. a) COCl2 (g) ↔ CO(g) + Cl2 (g) ...
Thermo notes Part II
... Enthalpy and entropy can sometimes reinforce each other – this makes the reaction really go or really not go. Ex. Dynamite has a neg Δ H & a pos Δ S so the rxn really goes once started… If the signs don’t reinforce does a rxn occur? This is where Gibbs Free energy addresses the spontaneity of rxns. ...
... Enthalpy and entropy can sometimes reinforce each other – this makes the reaction really go or really not go. Ex. Dynamite has a neg Δ H & a pos Δ S so the rxn really goes once started… If the signs don’t reinforce does a rxn occur? This is where Gibbs Free energy addresses the spontaneity of rxns. ...
Scaling laws in the macro-, micro- and nanoworlds
... In order to understand the transition from macroscopic to microscopic dimensions, one obviously needs to consider pluridisciplinary effects. This makes the teaching of, for instance, micromachines, a difficult task [1]. A starting point would be to deal with scaling laws. It is the aim of this paper ...
... In order to understand the transition from macroscopic to microscopic dimensions, one obviously needs to consider pluridisciplinary effects. This makes the teaching of, for instance, micromachines, a difficult task [1]. A starting point would be to deal with scaling laws. It is the aim of this paper ...
Equilibrium
... land-forming processes were responsible for the shape of the Earth’s surface, and the idea of a ‘balance of nature’ prevailed. This was expressed first through the graded profile of rivers for time-bound studies, and subsequently by the definition of other types of equilibrium such as dynamic, quasi ...
... land-forming processes were responsible for the shape of the Earth’s surface, and the idea of a ‘balance of nature’ prevailed. This was expressed first through the graded profile of rivers for time-bound studies, and subsequently by the definition of other types of equilibrium such as dynamic, quasi ...
ENTHALPY CHANGE DH
... The units of entropy are: J.K-1.mol-1 Entropy decreases as temperature decreases, so that at absolute zero (0K), most substances are solids consisting of perfectly ordered particles which have ceased to vibrate. They therefore have zero entropy. This means that there is a definite starting point fo ...
... The units of entropy are: J.K-1.mol-1 Entropy decreases as temperature decreases, so that at absolute zero (0K), most substances are solids consisting of perfectly ordered particles which have ceased to vibrate. They therefore have zero entropy. This means that there is a definite starting point fo ...
Lecture 10 Activity of chemical components
... shown that the Gibb’s free energy is related to Reaction constant. We may then combine both the equations to obtain a relationship between temperature and K, Known as Van’t Hoff relation as follows: d (G / T ) 1 dG G S G ST G ...
... shown that the Gibb’s free energy is related to Reaction constant. We may then combine both the equations to obtain a relationship between temperature and K, Known as Van’t Hoff relation as follows: d (G / T ) 1 dG G S G ST G ...
Unit Powerpoint
... the force x the distance over which the motion occurs) or produce heat. Energy comes in many forms- solar, nuclear, and electrical are just a few examples. In chemistry, heat energy is often what we are interested in. ...
... the force x the distance over which the motion occurs) or produce heat. Energy comes in many forms- solar, nuclear, and electrical are just a few examples. In chemistry, heat energy is often what we are interested in. ...
Advanced Physical Chemistry Professor Angelo R. Rossi http
... Place a weight of mass m on the top of the piston. Because of various processes taking place inside the cylinder, the piston and the mass are pushed up or down until a final resting place (i.e. the final state), is ...
... Place a weight of mass m on the top of the piston. Because of various processes taking place inside the cylinder, the piston and the mass are pushed up or down until a final resting place (i.e. the final state), is ...
chapter 5 lecture notes ppt
... system is independent of the path by which the system achieved that state. In the system below, the water could have reached room temperature from either direction. ...
... system is independent of the path by which the system achieved that state. In the system below, the water could have reached room temperature from either direction. ...
Part V The Third Law and Free Energy
... unattainability statement of the third law of thermodynamics. The Nernst-Simon statement of the third law, states that: The entropy change associated with any isothermal reversible process of a condensed system approaches zero as the temperature approaches zero. To prove the equivalence of the unatt ...
... unattainability statement of the third law of thermodynamics. The Nernst-Simon statement of the third law, states that: The entropy change associated with any isothermal reversible process of a condensed system approaches zero as the temperature approaches zero. To prove the equivalence of the unatt ...