HEATSOF DILUTION OF AQUEOUS SODIUM PERCHLORATE
Feb., 1963
Cc(IV)
+ glycerol
IC1
k complex +products
122
The equilibrium constant for the complex is Jcl/lr2 li3 is the first-ordcr rate constant for the disproportionation of the cerium(1V)-glycerol complex, and k is the observed rate constant for the disappearance of Ce(1V). Irom the graph (Fig. 1) of l/lc us. l/[glycerol], the Constants K and 1i3 were calculated to be 20.0 moles-' and 0.83 mine-', respectively. = K,
TABLE I1 GLYCEROL-CERIIX(IV) REACTION AS
INITIAL RATE OF
THE A FCNCTION O F IXITIAL GLYCEROL A N D c C ( I v ) CONCENTRATIONS
[HCIO,]
=
0.5 ill, [SaCIO,] = 0.1 A I , 'I' = 20"
- d [ C e ( I V ) l / d t X lo', moles 1. - 1 min. - 1
[Ce(IV)lo X IO',
M
M
0.80
0 33 0 66 1 .oo 2.00 0.33 , :3:3 .:
