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Testube 1 2 3 4 5

Before [Fe 3+] 0.2 0.12 0.072 0.0432 0.02592

Mixing [CN!] 0.002 0.002 0.002 0.002 0.002

"fter[Fe3+

] 0.1 0.0# 0.03# 0.021# 0.0129#

Mixing [CN!] 0.3 0.1$ 0.10$ 0.0#4$ 0.03$$$

%s &%eig%t of

st'n('r()

xxx 1.# 2 2.3 2.#

%u &%eig%t of

un*non)

xxx 3.# 3.# 3.# 3.#

[Fe3+] xxx 0.0$9 0.11 0.12$ 0.14

[CN!] xxx 0.000$9 0.0011 0.0013 0.0014

[FeCN2+] 0.1 0.031 !0.03$ !0.0$4$ !0.11

*e, xxx 129.17 !2#3.$9 !9$1.4$ !2121.91

-esuts/ &N'su't *o n' 'ng s'e 'u'tion)

isussion of -esuts/

n t%is exerient e exerient'6 e'sure( t%e 'ue of * 't e,uiibriu b'se( on

(ere'sing onentr'tion of Fe &). T%e tren( of t%e resuts 's (ere'sing fro 129.17 u to

neg'tie &!) 2121.91. T%is is true if e i t'*e t%e 8e C%'teier rinie. "or(ing to 8e

C%'teier :T%e osition of e,uiibriu i oe so t%'t t%e onentr'tion of re't'nt inre'ses

'g'in.;

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Conusions 'n( -eoen('tions/

T%is exerient %'s t'ug%t us %o to oute for t%e exerient' 'ues of *e,. T%e

*e, fro seri' (iution r'nges fro 129.17 u to !2121.91. T%e resuts ere rig%t fro t%e'ssution of 8e C%'teier rinie. Fro t%e (ere'sing onentr'tion t%e *e, f'ors t%e

re't'nt t%'t is %6 t%e resut 's ointing out to t%e neg'tie 'ues of *e, 'ssuing t%e

teer'ture is onst'nt 't roo teer'ture %en t%e exerient 's erfore(. T%e resuts

seee( %ig% be'use t%e et%o( e use( 's t%e Beer!8'bert 8'.