the only modification is to identify dQp with dh, the change of enthalpy of the system Then ds-dH/T≡0.or0≡dH-TdS dhs tds (const. p, no non-pV work) These expressions can be simplified even more by introducing two new thermodynamic functions They are defined as follows Helmholtz function: A=U-TS Gibbs function G=H-TS 4上一内容下一内容◇回主目录 返回 2021/2/22上一内容 下一内容 回主目录 返回 2021/2/22 the only modification is to identify dQp with dH, the change of enthalpy of the system. Then dS – dH /T ≧ 0, or 0 ≧ dH - T dS dH≤ TdS (const. p, no non-pV work) These expressions can be simplified even more by introducing two new thermodynamic functions. They are defined as follows: Helmholtz function: A = U – T S Gibbs function: G = H – T S