Liesegang patterns:: Effect of dissociation of the invading electrolyte

被引:17
作者
Chopard, B
Droz, M [1 ]
Magnin, J
Rácz, Z
Zrinyi, M
机构
[1] Univ Geneva, Dept Phys Theor, CH-1211 Geneva 4, Switzerland
[2] Univ Geneva, Dept Informat, CH-1211 Geneva 4, Switzerland
[3] Eotvos Lorand Univ, Inst Theoret Phys, H-1088 Budapest, Hungary
[4] Tech Univ Budapest, Dept Phys Chem, H-1521 Budapest, Hungary
关键词
D O I
10.1021/jp984006a
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The effect of dissociation of the invading electrolyte on the formation of Liesegang bands is investigated. We find, using organic compounds with known dissociation constants, that the spacing coefficient, 1 + p, that characterizes the position of the nth band as x(n) similar to (1 + p)(n) decreases with increasing dissociation constant, K(d). Theoretical arguments are developed to explain these experimental findings and to calculate explicitly the K(d) dependence of 1 + p.
引用
收藏
页码:1432 / 1436
页数:5
相关论文
共 22 条
[1]   REACTION-DIFFUSION CELLULAR-AUTOMATA MODEL FOR THE FORMATION OF LIESEGANG PATTERNS [J].
CHOPARD, B ;
LUTHI, P ;
DROZ, M .
PHYSICAL REVIEW LETTERS, 1994, 72 (09) :1384-1387
[2]   THE PATTERNS PRODUCED BY PRECIPITATION AT A MOVING REACTION FRONT [J].
DEE, GT .
PHYSICA D, 1986, 23 (1-3) :340-344
[3]   Theory of the Liesegang ring formation. [J].
Dhar, NR ;
Chatterji, AC .
KOLLOID-ZEITSCHRIFT, 1925, 37 (01) :2-9
[4]   MECHANISM OF CHEMICAL INSTABILITY FOR PERIODIC PRECIPITATION PHENOMENA [J].
FLICKER, M ;
ROSS, J .
JOURNAL OF CHEMICAL PHYSICS, 1974, 60 (09) :3458-3465
[5]   PROPERTIES OF THE REACTION FRONT IN AN A+B-]C TYPE REACTION-DIFFUSION PROCESS [J].
GALFI, L ;
RACZ, Z .
PHYSICAL REVIEW A, 1988, 38 (06) :3151-3154
[6]  
Henisch HK., 1991, Periodic precipitation
[7]  
Jablczynski K., 1923, B SOC CHIM FR, V33, P1592
[8]   MEASUREMENTS OF TEMPORAL AND SPATIAL SEQUENCES OF EVENTS IN PERIODIC PRECIPITATION PROCESSES [J].
KAI, S ;
MULLER, SC ;
ROSS, J .
JOURNAL OF CHEMICAL PHYSICS, 1982, 76 (03) :1392-1406
[9]  
Liesegang R.E., 1896, NATURWISS WOCHENSCHR, V10, P353, DOI DOI 10.1007/BF01830142
[10]  
LISE DR, 1913, CRC HDB CHEM PHYSICS