89.6 Rate Theories of elementary reaction 9.6.2 Calculation of ZaB Decomposition of HI: 2HI=H2+I, AB=ILd?/8RT [A]B] 丌D2 aRT AB [A]2 At 1.0 x 10 Pa and 700 K, d Hi=P= 1.0×10Pa 17 4lmol. m-3 3.50×10-1 RT8314JK-1mol×700K 8×8.314×700 AA 3.1416(6.02×103)(350 (1741)2=1.017×104m 2 3.1416×128×10 Generally, ZAB of gaseous reactions at ambient temperature and pressure is of the magnitude of 1035 m-3.s-IDecomposition of HI: 2HI = H2 + I2 2 2 2 AA AA A 2 8 [A] 2 RT Z L d M   = 2 2 AB AB 8 [A][B] RT Z L d   = At 1.0  105 Pa and 700 K, d = 3.50  10-10 m, Z HI-HI = ? 5 3 1 1 1.0 10 Pa [HI] 17.41mol m 8.314J K mol 700K p RT − − −  = = =     23 2 10 2 2 34 3 1 AA 3 2 8 8.314 700 3.1416(6.02 10 ) (3.50 10 ) (17.41) 1.017 10 m s 2 3.1416 128 10 Z − − − −   =    =    Generally, ZAB of gaseous reactions at ambient temperature and pressure is of the magnitude of 1035 m-3 s -1 . 9.6.2 Calculation of ZAB §9.6 Rate Theories of elementary reaction