Chm 115 Study guides, Class notes & Summaries

CHM 201: Introduction to Physical Chemistry II COURSEDEVELOPMENT Course Developer DrT. Busari University of Lagos Akoka, Lagos Unit Writer DrT. Busari University of Lagos Akoka, Lagos Course Coordinators Dr F. Peters Ahmadu Bello University Zaria Prof Aiyepeku University of lbadan Ibadan Alkpe National Open University of Nigeria Lagos National Open University of Nigeria National Open University of Nigeria Headquarters National Open University of Nigeria 14/16Ahm...

Degeneracy - Orbitals with a given n having identical energy Metals - Lose electrons from valence shall form cations internal energy - Potential and kinetic energy of all particles that make up the system nonmetals - Add electrons to valence shells, form negative ions (anions) Work - Energy transferred when an object moves by a force enthalpy - total heat content of a system First law of thermodynamics - ΔEsys = q + w What happens to enthalpy under constant pressure conditions? - ΔH = q...

kinetic energy - the energy of motion potential energy - the stored energy internal energy of a system - the sum of all potential and kinetic energy components reactants, products - internal energy changes when _______ change to _________ exothermic - energy released to the surroundings; bonds forming; E initial > E final endothermic - energy absorbed from surroundings; bonds broken; E final > E initial work - the energy transferred when an object is moved against a force heat - the...

Lab - Pre-lab, Post-Lab and Data

CHM 115 Chapter 19 & Thermodynamics 20 Practice Questions with answers 1. If S° for the following reaction is -149 J/mol. Calculate S° for Cl2 (g). 2Fe(s) 3Cl2 (g)  2FeCl3(s) Standard entropies for Fe = 27 J/mol; FeCl3 = 142 J/mol 2. What is the highest temperature at which the following reaction becomes spontaneous? A (aq) B (aq) C (s) D (aq) ΔH°= -34.0 kJ/mol ΔS° = -57.0 J/mol•K 3. What is the value of ΔG° (in kJ/mol) for this...