=25=-1mn=-1mn=1如mn=1如mn dt dt b dt g dt h dt 1a[4]1aB]1a[G]1a[h] a dt b dt g dt h dt 1 d[C] Unit: mol m-3 dt molecule cm-s molL-I S-1
dt dn dt h dn dt g dn dt b dn dt a d J 1 A 1 B 1 G 1 H = = − = − = = dt d H dt h d G dt g d B dt b d A a r 1 [ ] 1 [ ] 1 [ ] 1 [ ] = − = − = = dt d C r i i 1 [ ] = Unit: mol m-3 s -1 molecule cm-3 s -1 mol L-1 S -1
2. Measurement of reaction rate 1 d[Ci] Phvsical meaning slope of the ct curve
2. Measurement of reaction rate i r 1 = Physical meaning: slope of the C ~ t curve dt d Ci [ ]
C Ct curve is usually called kinetic curve 动力学曲线 The rate at a particular time can be obtained by computing the slope of a line tangent to the curve at that time point
C ~ t curve is usually called kinetic curve The rate at a particular time can be obtained by computing the slope of a line tangent to the curve at that time point. 动力学曲线
Initial rate dc t=0 dc dt
=0 = dt t dC r dt t t dC r = = Initial rate
C t=0 t =t t