Chemical reaction system Suppose a reaction D+eE+…>fF+gG+ Or O VB B B Based on extent of reaction ds B d B 4上一内容下一内容◇回主目录 返回
上一内容 下一内容 回主目录 返回 Chemical reaction system Suppose a reaction： d e f g D E F G + + → + + B d B d n = d d nB B = Based on extent of reaction： = B Or: 0 B B
Fundamental equation dG=-Sd7+p+∑/dnB B At const T and p (dG)n=∑Adh=∑vd5(dh=vd) B OG ()x,=∑vB a B s=l mol: (△Gm)p=∑vAB (b) B 4上一内容下一内容◇回主目录 返回
上一内容 下一内容 回主目录 返回 Fundamental equation = − + + B dG SdT Vdp B dnB , B B B B B B d d d （ ）G n T p = = B B (d d ) n = At const. T and P， , B B B ( ) (a) T p G = = 1 mol ： r m , B B B (b) （ ） = G T p
Direction and limit of a chemical reaction UseO)n,∑m或(AGn) to determine T,p (A, Gm)Tp <0 The reaction spontaneousl proceeds from left to right (A, Gmt>o The reaction spontaneousl proceeds from right to left (A Gm)Tp=o The reaction is at equilibrium 4上一内容下一内容◇回主目录 返回
上一内容 下一内容 回主目录 返回 , B r m , B ( ) , ( ) T p B T p G G 或 r m , ( ) G T p 0 The reaction spontaneously proceeds from left to right. r m , ( ) 0 G T p The reaction spontaneously proceeds from right to left. r m , ( ) 0 G T p = The reaction is at equilibrium. Direction and limit of a chemical reaction Use to determine:
Direction and limit of a chemical reaction OG is the slope of g with recpect to the extent , P of reaction 5 G )n<0 From left to right P G >0 From right to left >(0 G OG dF p=0 At equilibrium 0 5— 体亲的吉布斯自由能和的关亲 4上一内容下一内容◇回主目录 返回
上一内容 下一内容 回主目录 返回 ( ) 0 , T p G From left to right ( ) 0 , T p G From right to left ( ) 0 , = T p G At equilibrium Direction and limit of a chemical reaction T P G , is the slope of G with recpect to the extent of reaction
Direction and limit of a chemical reaction 体垂的古市斯自由能和的亲 4上一内容下一内容令回主目录 返回
上一内容 下一内容 回主目录 返回 Direction and limit of a chemical reaction