Fundamentals of Thermodynamics Complete Lecture Notes and Study Guide Latest 2025 Verified Concepts, University Physics

Fundamentals of Thermodynamics comprehensive textbook chapter covering basic postulates and laws of thermodynamics including zeroth law (thermal equilibrium and temperature), first law (internal energy U, heat Q, work W relations, perpetual motion machine of first type impossibility), second law (entropy S definition for reversible and irreversible processes, disorder and entropy increase in adiabatic isolated systems), third law (absolute zero entropy, unattainability of 0 K), thermodynamic functions and state variables including enthalpy H = U + pV, Helmholtz energy F = U - TS, Gibbs energy G = H - TS, heat capacities (isochoric CV and isobaric Cp definitions and relations), molar thermodynamic functions, fugacity and fugacity coefficient definitions and calculations, absolute vs relative thermodynamic quantities, total differential properties and conditions for state functions, Maxwell relations derived from Gibbs equations (dU = TdS - pdV, dH = TdS + Vdp, dF = -SdT - pdV, dG = -SdT + Vdp), conversion from natural variables to T,V or T,p dependencies, conditions of thermodynamic equilibrium (entropy maximum for isolated systems, internal energy minimum, Gibbs energy minimum at constant T,p), temperature and pressure dependence of heat capacities using empirical relations a + bT + cT² and Debye T³ law at low temperatures, Mayer relation Cp - CV = nR for ideal gases, internal energy calculations for homogeneous systems and ideal gases (U function of temperature only), enthalpy calculations including pressure dependence using virial equations of state, entropy calculations as function of T,V and T,p including phase transition entropy changes ΔS = ΔH/T, absolute entropy calculations from 0 K using Debye extrapolation and summing phase transition and heating contributions, Helmholtz energy and Gibbs energy changes during phase transitions (ΔG = 0 for reversible transitions), fugacity calculations from compressibility factor z using equations of state and corresponding states theorem, and irreversible process calculations using reversible substitution paths for supercooled liquid solidification and adiabatic processes. Perfect for undergraduate and graduate students in physics, chemistry, and engineering courses covering classical thermodynamics. Course Codes: