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Iowa State University Capstones, Theses and Retrospective Theses and Dissertations Dissertations

1950 Part I Chemical kinetics of the oxidation of to permanganate by Part II Solubility, activity coefficients and activity product of manganese (II) iodate Anson Mack Hayes Iowa State College

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Recommended Citation Hayes, Anson Mack, "Part I Chemical kinetics of the oxidation of manganese to permanganate by periodate Part II Solubility, activity coefficients and activity product of manganese (II) iodate " (1950). Retrospective Theses and Dissertations. 13713. https://lib.dr.iastate.edu/rtd/13713

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%|i%sta^ %aCeai4)2*'3:.i4s3LO'^ i#tii §•*-© »teiaeftl®i %# ®,i|§ mi.^ %im ' ©.© S*§ IS.© IS.©' 2©.® 33.0 2f,.0 2i.O ©•t. @.Ofi §<©4© 0.0f? §,m 0.24S ®.Sf3 O.sa? 0.t5« tim M B#i 3i-#i 4|.i 13.© S8..® ©a. »tfff3 i^.:i33 i.sm -i.aa i.s64 i.m

^ %mj^' IMS *^5!% 5 Qjm s 3.S4 x lo"^ i«iMit t«f® •fei-®rptl« %# wit# §•© 5.0• 1®.© If.©' as.§ ^.0 33.© t.i. §•©»! §.03S ®.€!4f Q.OfS 0.13© ©•» 0.3i3 ©.SH %im 14.© 3f.i 43.® 4i#® 51.0 ^.0 il.O ©.©. §.m &.m isfr i*m i.m ijm i.iie^ um %$,m H.O ®.i. %^m

^ %Sli4 » Q*m %|I% = 0.136 %«#io4)2: s 3.i5 * wr^. I0%»t itiFii a¥fi

^ %ei% » s ©.If# %iCi®j)2 s 1.94 X ir^ • 3 »mx ir-^ !©%•! *»r® ®'eri?(isf«B^s %& ®»02O 9p%im.l i«mi%f wai^ tl*# §.© J.O 5.0 f.® f.© n.© 14.0 li.o ©.i. §.®© ©.eif 0.01^ O.Mi ©aff ©.4i® 0.ifS i.ffi tils 1S.0 tl.O 24.6 ©•». 0.«

s 0,424 %|3[% - §M *«iCl0|)2 *

*^(6104)2 S 7.8f * %im ©.0 3.0 f.0 6*0 ?*0 S.© f.O 10.0 11.0 OJI. 0.020 0.06© 0.1i4 0.311 Q.m QM6 O.S?§ 1.0§6 l.lf? Urn 3S.0 14.0 M.O lS.t ©.i. 1.100 1.40f 1.4fl 14^

- 0,424 « l.m s 10-^ %5l06 ®

*^(0104)2 s li«® 0.0 2.i 4.® i.0 «.§ 10.0 12.0 14.0 16.0 §.». 0.0 0.01 0.022 0.i4S 0.097 0.166 0.24f 0.433 tiae li.0 ao.o 2^.0 I4.O 16.0 2i.0 ©.i. O.in 0.573 0.62t 0.654 0.6% ©.6i©

« 5IM X wr^ \t% « QM "ialoio^lg S 3.fa X 10-4 S 1.02 3C10-5 il*» 0.0 0.P 1.0 2.0 1.0 4.0 f.O 7.0 f.0 0.». 0.063 0.067 §.O«0 0.113 ©.Iff O.tOf 0.2§3 0.37t ©.4S3 Mm 11.0 13.0 IS.O 17.0 lf.O 21.0 $S» ©.#7 0.6te 0.61® 0.700 ©.mi 0.72t • 12 • fmm 1

X lO"-^ » 0.1.€4 • 4

w»4 9 M X IQ'^ tins ®.0 t.l® 1.© iti !•© f.0 ©.i, ®.ltf 0.i4O ®.15i 0^10 §#267 0.3ff ©.5li %im US US US IfS t9S ©a. $.m §,m Q^m &M$ e.m

m % C 0M «i.m * %5it|

%ftC61%)2 •- l.fl * tim ©.0 0.33 0,66 IS- 2,0 4.0 $S ^S OS, §,2^f ©.im oam $M ©•381 QMl 0.#f27 O.fil 8.0 f.n 10*0 11.0 ms us 11.0 •#*f f 0.695 O.m 0.763 0.787 0.W2 ©.««

%C1@^ 5 §.ia4 S l.fsi * 10-3 » ©.161

« $m X ir4 11^®

IS a.o 3.0 4*0 fs ©.». §^m i.6f7' ©.m • ©*fso §.«fa o.fii 1.034 i.ff i.is© %!»» 7.0 S.O f.© 11.0 13.0' #J6. 1.117 1.216 1,.232 l.i§0 l.MO

%1% s ©.414 "KHdO^]!^ s l.m X 1©'^ %I% 2

.^nCClO^)^ S |.f2 x l©*^. %aO^ S 6.05 X 1®-^

Itm ©•© 0.33 ©*66 1.© a.© 4.0 f.O 6.0 0.1. 1.34s 1.372 1405 1.44i 1.SS7 1.647 1.7©2 1.746 1.71^ tis* 7.© d.© 9.© H.© 0.1. 1.1®6 l.»0 1.808 l.m3 h S QJM * }2 5 l*n X 10"^' %|I% s ,%§f S X "ofeii s fM M tiae §•© ©.ll ®«66 !•© 1.5© a.i 3.i 4*® S.0 t.i|0 2,05f 2.1i4 2.141 2 2.|4f a.Jtt 2.41? tliMI i.O t.© •.§ 1®.© 0,i, 2.41? 2U4f 2.4S§ 2*454

= i 4 .y@%0i »ex>0 ucd'to ti«t 0.® 0.25 0.1 ©.?f l.S 2,0 2.1 1.0 0.035 ®.050 ®*tr© 0.103 0.13? i.lM ©.l«f 0. tiiw S.f 4.® 4.1 s.e §*it o.aji ©.a4i ©.tf2 o.a,5f

-3'r=^ m S I "1% - 1 fotei s@3*9 ft'bsia*ptic» te#i>M3fwis 0.045 apMenl ttnii^

Sisi 0,0 §M 0.25 0.5 0,?5 1.25 IM urn 0.045 0.0?4 0.0% 0.121 ©.142 0.18? 0,215 0.22f

4>4v3LfBm fMJk 2.1? 2.i? 0*19. 0.243 0.24i

#2? 0, 3*.* Qt "mWj s 1 '3^X ^ w ai^ ^ 80t«i 2®r0' ateSQi^iioR e«rr*sf«3ni» t& 0.04$ @ptiml deXMiitf' tiiw 0.0 0.25 §.3? ©.f 0.?5 "1.© 1.25' l.f© 0.». 0.045 0.13? 0.1?1 ©.Iff 0,210 0.2# 0,33# ©.3?0 ti»® • l.?5 2.© 2*5 J.O 3.5 0.». 0.3f2 0.410 Q*m 0.43i 0«441 • 24 •

ftfUi X

#i- mim *^i©^ «t a# i»fo ««KfWi#|»©»iii to 0.053 e^tml 4«iaitsr Wfti^ i,0 ,2f .f .f| l.i l.s t.§ 2.5 3.® i3. ®.i5l 0.120 ®.141 0.1% 0.231 ©.2f4 0.3lf tiwB 3.1 4.® 4.5 f.t 5.5 ®3. 0.3P 0.3^ 0.401 0.41f

#2f fttae%i« 4^ 8510^ a* 4# mit& rnhmmptlm %& ©.©43 optical i«asitr «sii» time 0.0 .25 .5 -.75 1.0 1.25 1,5 1.75 2.0 0,D, 0.043 tail 0.158 0.202 0..;^ 0.277 0.30f 0.336 0.351 %$m 2.25 2.75 3.50 4.® 4.5 ®a. 0.373 ®.|f4 OUlO ©.412 0.42#

#30 MmnUm ^ to{Sl©^)g «ith •1^1% nt 2^' Xe^s a«r® ato»«ipii®a %m 0«®3i iftisil wsaits tim 0.0 2.0 4,§ 5.® 7.® f.® ll.O 13.0 03. 0.O3t O.oa QM9 ®.ii7 0431 0.204 0.2m nm 15.0 17.0 lf.0 21.® 23.0 25.© 27.0 m, 0.3m ©.4^ &M1 0.6% 0.6^ ©.m

#31 ^ fcCeiO^)^ at 40* S®t«i s#r© *bsflrpti« mmrmmpm&s te 0.^®:® a|»tl«l wtlt» Ma® 0.0 2.0 4.0 6.© 7.© t.O t.§ 10.0 11,0 0.0. §,m» o.oa 0.^ 0.172 ©.t3f 0.311 0.3m 0.410 0.545 tin# 12,© l|.t U.0 16.0 is.i lO.t #.i. 0.607 ©.6ff 0.700 0.747 O.Tlf 0.773 - 25 -

1.2-

1.0--

0.4-

24 28 96 40 44 48 time (minutes)

Figure 3 - Rate curves at 5260 A

No. %G10^ %5l06 %n(010^)2

1 .478 .250 3.54 X 10-f 2 .974 .250 3.54 X 10-f 3 .990 .250 3.54 X 10-^ 4 1.923 .250 3.54 X 10--^ 5 2.94 .250 3.54 X 10-4 - 26 -

(.8-1

1.5-

.3-'

I.S-,

r 0.7-

o.s-

0.4-

0. a^- 01-

TIME (MINUTE S)

Figure 4 •• Rate curves at 5260 A

%C10^ %5lO^ %n(C10^)2

5 2.94 250 3.54 X lO--^

6 3.78 ,250 3.54 X lO"-^ - 27 -

1.6-

I.S

1.4-

1.3-

1,0-

03- j 0.8-

o 0.7 0^- 0.5-

0.4-

0.1- O.O^

TIME (MINUTES) O Figure 5 - Rate curves at 5260 A

%C10^ %n(C10^)2

7 1.885 .500 3.54- X 10--^

8 1.885 .312 3.5A X 10-4 •• 28 «

1.80.

Ill 100-

't' 2-^ 32 40 43 TIME (MINUTE)

Figure 6 - Rate curve at 5260 A

No. %G10, H^IO, to (ClO^), 5 6

9 1.885 .250 3.5A X 10

10 1.885 .1871 3.54 X 10"rU -4. 11 1.885 .1248 3.54 X 10 - 29 -

1.4-

s i.0--

0.4-

0.2 -

0.0 20 28 32 36 40 4s time (minutes)

- O Figure 7 - Rate curves at 5260 A

No. %C10^ ^51% ^KH (103)2 %n(C10^)2

12 0.424 .136 1.94 X 10"^ 3.65 X 10"^

13 0.424 .166 1.94 X 10"^ 3.92 X 10"'^

14 0.424 .150 1.94 X 10'^ 7.85 X 10'^ - 30

0.9 08

>. 0.7

"m 0.6 z o 05 < 0^4 u pa3 a. ® 02

00 TIME (MINUTES)

Figure 8 - Reaction rate curves

No. %n (010^)2 %C10, 4 '"HIO^ "^5106

1 3.92 x 10""^ 0.424 1.13 x 10"2 0.232

2 3.92 x 10"^ 0,424 0.379 x 10-2 0.241

3 3.92 x 10"^ 0.424 0.15 X 10-2 0,243

A 3.92 x lO"'^ 0.424 0 0.245 - 31 -

2.50-

8.00 —

C I.S0

1.00—

0.30

0-®® ! M TI I I I I I I I M I I I I I I 1 I I I 1 I 1 I I I I I I I I I 0 2 4 6 a 10 12 14 16 18 20 28 24 26 28 30 38 34 36 hme (minutes) O Figure 9 - Rate curves at 5260 A

No. %ciO '^KH(IG2)2 ^^5^% ^Mn(ClO^) '^'kMNO

18 .4-24 1.94 X lorl .167 3.92 x lO"/" 0 19 .424 1.94- X lOo .166 3.92 X 107 3.02 x 10"^ 20 .424. 1.94 X 10 o .166 3.92 X 10 7 9.06 x 10"^ 21 .424 1.94 X 10"^ .165 3.92 X 10"7 1.21 X 10-4 22 .424 1.94 X 10":; .163 3.92 X 10"7 3.02 X 10-^ 23 .424 1.94 X 10"^ .160 3.92 X 10-7 6.05 X lO"; 24 .424 1.94 X 10'^ .157 3.92 X 10~^ 9.06 X 10"^ - 32 -

g 0,^"-

, "T—i—' 1 I 1—I—!—^—1—T I' 1 ' I——r , , 0 0.80 1.00 i.so 2.00 2.50 3.00 3,50 4.00 4.50 5.00 5.50 6.00 time (minutes) O Figure 10 - Rate curves at 5260 A

Ko. H^IO^ HOIO IO3 U

25 1 i 1 1 26 1 1 1 1 27 2 1 1 1 - 33 -

40.

0.3C 29:

2.WV 2.So 3.50 S.5V TIME (MINUTES)

Figure 11 - Reaction curves at 29° and 4-0°

III Mn - 34 -

w O.SO— 4o; O 0 40 29; 30 —

O.OC-

time (minutes)

O o Figure 12 - Reaction curves at 29 and 1^0

Mn^^—^ MnO' - 35 -

teaetieai »#re Mte Im wlii«& ipeistfal wiiflB ff®b 3$^ t ta |0©6 |. was smm»& m mpMly as pe»#ifel#, ftt eriftaal emmo" tmtim ©f ttaiw mmtimm «r® giwa ta fafei# II* 1 plot «ff ttea # ® <2|>ti@al itii»lt|' at 1 aat at t&e p«i*»gg«wt« ptak at 5®60 A wai mle' &»i bat 1M»@& as figaiNi 3.1. s* ifisny^yyi,

©wlag aicpltamt^ aa^ mpmeimw^@ it mm notle#^ ^t whll® aiilag a s©lttti« #f p-ftasii®® fe»iiigarait« t» a »c»l«fei@a ^ wiaganpe (II) p®r

^4, Biff, S*|e IMIM (tm)* m ^ m

film JI

laltliEl fa? S'saafilag 'Iteaeti^s

%5l(% %ei04 •w^ «I1©,

%h %f2 m •263 .424 0 @ M. 3,m X1©*^ .a63 .424 © 3a X 10*3 n 3.f2 3C iO-^' .263 ,4S>4 0 §.2 X 10-^ 44 * 1©*^ .^3 .424 3 X 10^ 3.1 X 10-3 5A 3.»ia X .m #424 3 X 1©"^ iai. 6A 3.ft X ir^ .131 •424 6 X 1©*^ 3dl

?1 3.f2 X 1©*^ .a63 , ^•424 © ® iA 3.^ 3i'l©-i .131 ,49J^ © © - 37 -

j?c-

1,60 i.50'

1.40 1.30: Mn'

!.I0— MnQ 0.90— o 0.80

0.60—

0.50 0.40-

o.io- 0.00-

time (minutes)

Figure 13 - Rate curves at 5260 2 and 36OO Aj Mn^ O.D. obtained

by difference. . IS .

. mwgH if»k left «1»@« siivii*! atteiifta

Isy %lm Mi ia %ht Mfesamtorj dii aofe rtpp©tiMMi MM

fht awit witiwsi fytpi»ti« ei pwrfl# ®»y »at®jri»l foraA ii&s t© th« »st®ri*l with iodie aiiM ftm n^mtima i»f mw^mm |IIX) 0.m#rS)ie 4 S'@^p3.«i prc^tinir# S pe« sC p'«l«s8te w^r# tisfolii^d to fO «f wftttr, tti® r«stiltl»g ®atoti« was aMiwi i® M sdlmtlw it fM« ^ (XX) ietftt- kyiirat© ia tli® pr*8»tt««- ««©«•# hfircflaafie utM, '&• ietal wlwi was 200 *1. A 8®ltttiai e«t»toAia^ |3 p», 1©®!® atii In $3$ eite«^ VftS' aidsd. - Ute# was amh Wmt Ili8 fljoaX •tltonol e«ii®»at»ti<« was •l&tm'l §#• fr®«ipitat« was apm ft 8iat«r®i |^@@ iisk m mpMiy m an# witahti with wftt®r-»that»0l. wixMmm* l&« timl vmh was wilit ff| «tlMiii®l 1ft spitf t@ wmmm as Kotli w«t«F m poi'SiWe# a« filt«r©€ wa« th®tt fSji-eei ia, a A«8®ieatse m& mllmei. to Ary f«• kmm »til. m ©i» ^ sleito©! e

. ?fet thewretlQal hsm bi®a »kmm fe®3.««

rnmmmm^ f .411 .§5f 94.111 mim ms t 2$

9ji^€ffli^i3nL0 — ii M II A * A ClKi4ai4

in&apu3*ie'vmwie i#tli pe'ie>i.@iat@ escMfttion t® f*swMika|iiiiat# liy ®®lwtis§ii?4e &mi^viMm with a aiidtel^ fr«ptr«i stiwaiat^i aai toy iptitleia im nir «f tfe® wai^d i3^ iMllt ^1%'* gsm M»iti®«l feselti witMii tlwi lOftrlffleatol m»m% IMti® «•» lai# fey «®UL««t- iBf fi»# ioiia® la ftlliwrlsf th®ifi»l q£ « .aM tltirttlJBf wtife- tiiiosiilfitt® ttlMtlaa.. *l«if th® ©heaital p?©- fertl»s ®f %lk® i«l% *«r« taken a« •vMaae® fm tM# aaa- mms» Cllll t0iat«, ItagaiMMi .Cm) teilat# prepaid m iM m parpl® p«iy Mlvrittl iihi@!3 i«@dipd8ea spim btnatlaf t# ft'^ ieiiM aM ^3%* fh« &xf Is mmTMhlf fta%l# i» aJbr far a i«»fatt®8® (III) ®alt» awB't© tib® tl»i af%«f at IW® fm ae-wwil m®

11 1

w i 1.00—

0.90-— a 0.80—

0.50-^—

0.40—

' M M I I I M M ' I M I M 1 M M 4000 4200 4400 4600 4800 SQOO 5200 5400 S600 9800 6000 6200 6200 WAVE LEN6TH (ANGSTROMS)

Figure 14- - Absorption eharacter of mnganese (III) iodate

ccffiplex Mn(I02)^*'^. • 42 -

mm- III

I-8«^ fmA%t si «ii»« I« tadintleii

t 0.0390 * 0.0435 $* 0.0475 f* 0.0560 »• 0.0594 # i#074i Wt 0.0825 !• 0.0854 »• 0.09X1 f 0.0972 i.H# » easaa 1* 0.131i S- 0.l6f9 §.1962 1 0.2U1 !• 0.2232 !• 0.1312 1 0.2^3 f- 0.^55 f 0.2969 0.3053 1 0.3162 t 0.34S© W 0.37^ 1 0.ISS3 I g E f* I t0 m %4 fi m S •#*43 m » i ^ Ift ^ 4I«W*• & ft W 4® •rt « $1 '«*« s § e •llSk s 1**^• *1t •5 *8 f t~^»HI ^ 1SS, ts «0 H, •g i 0 r4 « ft 4» m 4S<1 f M <4#J

i.0_, 0.9_ Q3-. aT_ 0.6_

25 • •09- 2 .08- .07- 26

.06-

.06- 27

.02-

.01

time

Figure 15 - Semilogarithmic plots of log 3«"X versus time for the oxidation of Mn(lOo) • X % I! I n { \m y nI c*—c % s H f I I ^ f If t . I r Irf i? a m •f » s*- "t l-« _ i t • I -\ a US I € I** j S I I I <" f f 3 f M 1 i A I g & 'C s I I • « "S % 1

# •I I ^7 la © t m •M t I ® >W13 • f % f • • » I I I I I I 1 ® I 11 ^ I m <3 § }

19 #- I I 11 S % I ft 1 I I II ^ i s *' I •& I

# I I I »-f II I I I I I % ^ 1 I 5 I f I i I s S 5 5 1 ^ I s 1 I i I I I 4a® 4»M I I % III k i S I 1 I I t $ g S h * .K i s s ^ I ^ i I :11 I I % f I $ II I g I ^ I S $ s 1 i I t I t I I I 1111 I - AS -

0.20-,

0^ I fc_

t' C.I4-

4 o.oe-

0.06-

004-

0.20 0.30 040 0i50 PERIOOATE CONCENTRATION (moles / liter)

Figure 16 - Linear plot of the mximum oxidation

rate of manganese (II) at various

periodate concentrations• - 4-9 -

JiX'—

awcu

m 0J50— h- 3z M O2 OT O> 0120-

oiio.

a»a —P_ ~ ^-r~ "T^ t.O a.o 3x> 4.0 ft.0 agio concentration (molcs/dter)

Figure 17 - Variation of rate at various perchloric

concentrations. <•* ^ *

fiml •3e%ineti»* «x®m@«8 of ioi«ts »M»ii t© slew tke i»t«, et wte with ioadl® m "W itseieWlai^ ami Spi#«i^' tes l»®8 lji®toa^«4 ai tig&m IS. fli® f«»g«4af »(isait» mmmwul fuet® wfeieli «ay pp&pm»^ »s#t «xflai»« fk«»e' em siMMrisei %eleir. I* fhB iSml 0xila@tiM @i pmmn§m&^ m» «@l m ii^i« ilAsar tmetlm &f to® mm§mm* fTmm%,^ ft® w«r® i3»«all|r vith tlift pwater finftl a®e»i0nM' % ««r« m to tMs nal®, ' i« fte« s«pfti«t» <&i oi f«»tti,^aate tiwi to til# liifle@ti«i fdtat ^ ttie »t® ©wrw. 1li« of %oth 40iat« aad f«i»msiiRi»t« t© tii« «i# ttls tiws mtf of wm§Kms@ Clf' miM sb^rtmitf tht ti®i mmawmrf tm mtiskm^ tih« i?t«etiea Miigp^s« (IM) «M® wi^ frttrtMat® was mgllgihl», 4. i l«f 4niiieti« wm ©fe««n«i f» tMi •«nM8tl«i. in «l3i®ai» «f th« tbfft ftee#|«f«tiw> i]^ltti»et», f* a# p«rli3aate <»Atir fm th® i»t« Has 1.0, 'flte ptWKii^MMtt# «pi®ip was mhmt i»S» ft Tkm mwm^@m 'Cll) mAm wm 1»0» t. ' A «l.»l«iii rate with mtjim *®M eww^ntr&tie® tail ^®rw^ at abwt l.,5 M f®i»«M.irle a«sii# 9» I»«r®asiiif tli« sti^nfth Jtoe-iraaswi the fraction ir»lsNSi%'. 1§« Kiap.M»e fill) i@i«t«i wm to fesfMacanate Isi. - 51 -

Figure 18 - Variation of rate with ionic strength. ! « t

s

I I

13 i i I s 1 1-4 I (H

m I I i w\ I I I t

1 «

J i « S - 54 •

aofc. Hie frap^ifi feil®fsi

|8) m&l *>

If I * la^' I f«ipli •fttilitoyitta (W) •* I I^ ^ ^ J

Cn) mu^)^ • 2 -^ia®^ • fx # a)iQ| i k^. t * %

{3.2| In^^ • ^ ' 2 ia^ I hj j ?«%© S. 1^

»»• •«qtt£lil!yl* wey® to' tet «iio<^' thftt «f«il.tisriw ttonfiiti®!® ©adiM l» as-swei# fbm @flh«r mmtimm m§m dhoaea m 1^- wmm rf sfeiiftiit lh« f®il%i«o

m) ii 5 (IllCtll CM) Bg = ijj Cm)Cisj)2 fUs 0«s®'rsisti« of ««n«t»es# «®sa»ll^ 1C?I5 5 § i?©tialy»8 (15) 1(11) • Hul) • sfif) « -®CV1I| s % • ig fit twi^rfsile® elt.@l»«8 is 'ttt# lew®? aMation si»tt8 (U) a »CXII • 3 »CI1I) • 4 »Clt) s 6 % - 3 % •o^ 0 •1 E I1^ -<»*» M ^ n -*1^ m u w # ,•«»«» Pt 1 ***^ 1 I •en •B 1 «« aT a 11 % ^T' w I^ g •#• 15# •HH Sa s 1^ ft - fi I aw r4 . J* m n ^ • ft s< fi if* m • fi *1 I m » s^ I ^ E w 1:1 1ft n II II II »~>k S H 3 ^ jt I fe' uM •ts 1^ 1 i I o» 12 l§ m i I I i I a ^ I I III m I I I I I f i I ^ I I s % n i! s i I s i f II I 1 i! I s- I 6 I f 1. 3 ^ % i I • ^ I i S •5 *1 ft [1 i i 1 fe ® t %4 I# 41 4 s IS ^« .©I §« o3 t a i - ft -

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0 0.1 02 0.3 0.5 0.6 a7 a» 0.9 1.0 ACTIVITY OF WATER o Figure 19 - Variation of the optical density at 5260 A for

permanganate solutions on sulfuric acid water

mixtures versus the activity of water. m 6®- •

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The 0Mistmm -af tw# 00IM fhasas was wty afiiaal. &m appaarad iiaatiaal ia apptaraaea t© Mafwwaa (II) taiat® wWlla tht otIieT was a 4afk raUdlah ktmm, flia «is.t®»ee ®e «aiipi««»e Clf) ioiattt liaabaaa si^gaatei by Bayg ai^ tli® appea»Bffie (rf iMa solM phata afp«ar«i Maatlaal wilb liy fr@lewif@i heattaf hyii*t®4 ••iigaa»»« (If) mU* wttte a«M* Bw piias® wtla wh#» SkppUM to th® afewa aol«%l«a witti tteae phaaaa ©©axlstlsf i® aqatlltoi'lia alibis s© ©as^ositioa 4ap»es «f and this reamlt

B« icfeaffar »ai E« i* S^mmk»r, g* Sh#m. 2S75 (1950)*' f I I J 1 I n gig I i i i " S ? M s H t I n *•% f m I 11 i sie»' I i r 1^1 s I I f I f t Ml t i s i i ^ m u I I I , P— a 5 P § % a 11 I 1 I I *% 1 i 3 M S I I •3I ' 4 S i I i 11 I i

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aio 0.20 030 040 050 0.60 0.70 Vll

Figure 1 - Solubility of mnganese (II) iodate in aqueous solutions of sodium chloride, potassium iodate and manganese (II) ,

O - Sodium Chloride

^ - Potassium Iodate

• - Manganese (II) Perchlorate 71 -

2.00-

-Z02_ -2i54_ -2.06- —1 -2.08- 'S o -2.10- c a -2.12_ o >- -2.14J 1— -1 S -2.16- 3 8 -Z.18_ § -2.20- -1 -2.22- -2.24_

-2.26- -2.28- -230- —T——I—I—I—I—I—I—r—I I r 2.7 2.8 2.9 ao 3.1 3.2 3.3 3-4 3.5 3.© 3.7 3.8 YI * 101^3

Figure 2 . Plot of log /solubility MndO^)^.? versus the reciprocal

absolute temperature x 10^, £ i ?? S P fl •m 1 m I 1 I !{ i 'e I I i t £ I •m 11 I A I s I « « % m I a I I I 41. & >=» s 11 > I 5 I I 1# « •^Hil I III! - 73 -

1.00.

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0500-

0400.

Figure 3 - Mean activity coefficients of manganese (ll) iodate in aqueous solutions of sodium chloride, potassium iodate, and manganese (ll) perchlorate.

0 NaCl @3°

• NaCl @ 25°

^ Mn(010^)2 @ 25°

• KIO, § 25° Y ® ^ i MnCl2 by EMF measurements fwm the .«srf» by mism iwill- Immm rslttimt

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