Thursday, January 23, 2020
Chemistry Study Guide Essay -- essays research papers
Chemistry Study Guide Chapter 9- Thermodynamics KE=  ½ mv2 w= F∆x w= force Ãâ€" distance ∙ A state function refers to a property of the system that depends only on its present state. ∙Internal Energy = heat + work ∆E = q + w ∙Pressure = Force/Area = P = F/A ∙Work= - external pressure Ãâ€" change in volume w = - P∆V Enthalpy H = E + PV qp = ∆E + P∆V ∆H = qp ∆H = H products – H reactants Ideal Gas Law PV = nRT Energy â€Å"heat†= 3/2 R∆T Cv = 3/2 R = â€Å"heat†required to change the temp of 1 mol of gas by 1K at constant volume Energy required = â€Å"heat†–      energy needed           -     energy needed to do to change the translational          the PV work energy Cp = 3/2 + R = 5/2 R = Cv + R = Cp E = 3/2 RT (per mole) ∆E = Cv∆T (per mole) ∆E = nCv∆T â€Å"Heat†required = qp = nCp∆T           = n (Cv + R) ∆T           = nCv∆T + nR∆T           (∆E) (PV) ∆H = ∆E + ∆(PV) ∆H = ∆E + &am...
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