2.1 Preface to the thermodynamics 2.2 The thermodynamic first law 2.3 Quasi-static process and reversible process 2.4 Enthalpy 2.5 Heat capacity 2.6 The first law in ideal gases 2.7 Thermochemistry 2.8 The Hess’s law 2.9 Heat in some processes 2.10 The temperature dependence of the reaction enthalpy —— Kirchhoff’s law 2.11 An adiabatic reaction ——non-isothermal reaction
Visible and Ultraviolet Spectroscopy An obvious difference between certain compounds is their color. In this respect the human eye is functioning as spectrometer analyzing the light reflected from the surface of a solid or passing through a liquid. Wavelength is defined on the left below as the distance between