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Inorganic Chemistry Exp 1
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Inorganic Chemistry Exp 1
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Jamilin Rosyidah
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LAB REPORT CHM475 INORGANIC CHEMISTRY
Experiment Number: Tit!e: Tit!e: "u#!it#ti$e An#!%&i& '(r I)enti'i*#ti(n (' ( ' Met#! C#ti(n& Le*turer+& N#me: ,r- M(.) S.u/ri bin I&m#i! Stu)ent+& N#me: Nur 0#mi!in R(&%i)#. 12m# bt- M(.#mm#) M( .#mm#) Yuini M#tri*u!#ti(n Number: 3554 C!#&&: RAS45A Submi&&i(n ,#te: 6638
INTRO,1CTION B#&e) (n t.eir *.emi*#! #n) p.%&i*#! be.#$i(ur9 #n#!%ti*#!!%9 met#! *#ti(n& *#n be *!#&&i'ie) int( 'i$e r(up& #& !i&te) be!(;< i=
ii=
iii=
i$=
$=
An#!%ti*#! Gr(up C#ti(n& A>9 H>9 Pb> ?(rm pre*ipit#te ;.en re#*te) ;it. HC! An#!%ti*#! Gr(up C#ti(n& A&6>9 Bi6>9 C)6>9 Cu>9 H>9 Pb>9 Sn4> ?(rm pre*ipit#te ;.en re#*te) #*i)i* HS An#!%ti*#! Gr(up 6 C#ti(n& C(6>9 ?e>9 Mn>9 Ni>9 @n>9 A!6>9 Cr 6> ?(rm pre*ipit#te ;.en re#*te) ;it. HS in NH6 A!6> i& &ep#r#te) #& A!OH=6 An#!%ti*#! Gr(up 4 C#ti(n& B#>9 C#>9 M>9 Sr > ?(rm pre*ipit#te ;.en re#*te) ;it. NH4=CO6 (r NH4HPO4 An#!%ti*#! Gr(up 5 C#ti(n& N#>9 > ?(rm &(!ub!e !t& ;.en re#*te) ;it. NH4=CO6 (r NH4HPO4
OB0ECTIDE T.e (be*ti$e (' t.i& experiment i& t( per'(rm Fu#!it#ti$e #n#! %&i& t( i)enti'% met#! *#ti(n&-
METHO, Pr(*e)ure A - )r(p& (' 8 M HC! ;ere #))e) t( mL (' t.e &(!uti(n - T.e &u&pen&i(n ;#& *entri'ue) '(r minute )ue t( pre&en*e (' *.!(ri)e pre*ipit#te6- #))iti(n#! )r(p (' 8 M HC! ;ere #))e) t( t.e *!e#r &upern#t#nt t( *.e*/ '(r *(mp!ete pre*ipit#ti(n4- T.e &upern#t#nt ;#& *entri'ue) ##in '(r minute )ue t( t.e pre&en*e (' pre*ipit#te5- T.e &upern#t#nt ;#& )e*#nte) in # *!e#n te&t tube8- T.e &upern#t#nt ;#& $e) '(r 'urt.er te&tin-
Pr(*e)ure B
- 8 M (' NH6 ;ere #))e) )r(p ;i&e t( t.e &(!uti(n unti! it i& b#&i*- T.e mp!e ;#& p!#*e) in # b(i!in ;#ter b#t. '(r 6 minute& in (r)er t( rem($e ex*e&& NH66- T.e $(!ume ;#& #)u&te) t( mL ;it. )i&ti!!e) ;#ter #n) 3 )r(p& (' 8 M HC! ;ere #))e)4- )r(p& (' t.i(#*et#mi)e ;ere #))e) t( t.e &(!uti(n #n) &tirre)5- T.e mp!e ;#& .e#te) in # b(i!in ;#ter b#t. '(r 3 minute& in (r)er t( #!!(; .%)r(!%&i& (' t.i(#*et#mi)e t( (**ur ;.i*. en)e) up pr()u*in HS8- T.e mp!e ;#& *entri'ue) '(r minute& )ue t( pre&en*e (' &u!'i)e pre*ipit#te #n) t.e &upern#t#nt ;#& )e*#nte) in # *!e#n te&t tube7- T.e &upern#t#nt ;#& $e) '(r 'urt.er te&tin-
Pr(*e)ure C - 6 #))iti(n#! )r(p& (' M t.i(#*et#mi)e ;ere #))e) t( t.e &upern#t#nt #n) t.e &upern#t#nt ;#& .e#te) '(r 5 m(re minute& t( *(mp!ete pre*ipit#ti(n- T.e &upern#t#nt ;#& *entri'ue) #n) )e*#nte) int( # *!e#n te&t tube )ue t( pre&en*e (' pre*ipit#te6- T.e $(!ume (' t.e &(!uti(n ;#& #)u&te) t( 6 mL ;it. )i&ti!!e) ;#ter #n) 3 )r(p& (' 8 M HC! #n) 3 )r(p& (' 8 M NH6 ;ere #))e)4- 8 M NH6 ;#& #))e) )r(p ;i&e unti! t.e &(!uti(n i& b#&i*5- 5 #))iti(n#! )r(p& (' 8 M NH6 #n) )r(p& (' M (' t.i(#*et#mi)e ;ere #))e) #n) t.e mixture ;#& &tirre) t.(r(u.!%8- T.e mp!e ;#& .e#te) in b(i!in ;#ter '(r3 minute&7- T.e &upern#t#nt ;#& *entri'ue) #n) )e*#nte) )ue t( t.e pre&en*e (' &u!'i)e pre*ipit#te@n> ;#& pre&ent in pre*ipit#te '(rm #& @nOH=- T.e &upern#t#nt ;#& $e) '(r 'urt.er te&tin-
Pr(*e)ure ,
- 8 M NH ;ere #))e) )r(p ;i&e t( t.e mp!e unti! it i& b#&i*- 35 )r(p& (' NH ;ere #))e) t( bu''er t.e &(!uti(n6- 363 )r(p& (' NH = CO ;ere #))e) t( t.e mp!e #n) ;#& &tirre)4- T.e te&t tube *(nt#inin t.e pre*ipit#te (' *#rb(n#te ;#& tr#n&'erre) t( ;#rm ;#ter b#t. 6
6
4
6
(' 73C 3C '(r 6 minute&-
5- T.e mp!e ;#& *entri'ue) #n) ;#& )e*#nte)8- T.e pre*ipit#te ;#& $e) '(r 'urt.er te&t&Pr(*e)ure , i=
- T.e pre*ipit#te ;#& ;#&.e) ;it. mL (' )i&ti!!e) ;#ter #n) *entri'ue) #n) t.e ;#&. ;#ter ;#& )e*#nte)-
- 8 M (' #*eti* #*i) ;#& #))e) )r(p ;i&e #n) ;#& &tirre) t( )i&&(!$e t.e pre*ipit#te6- A 'e; m(re )r(p& 8 M #*eti* #*i) ;#& #))e) u nti! it i& #*i)i*4- 8 )r(p& (' M CrO ;ere #))e) t( t.e &(!uti(n #n) &tirre)5- T.e &(!uti(n ;#& *entri'ue) )ue t( t.e pre&en*e (' pre*ipit#te8- T.e &upern#t#nt ;#& $e) '(r 'urt.er te&tin
4
Pr(*e)ure , ii=
- 3 )r(p& (' M C O ;ere #))e) t( t.e &(!uti(n #n) &tirre) '(r #b(ut 3 minute&- T.e &(!uti(n ;#& *entri'ue) )ue t( pre&en*e (' (x#!#te pre*ipit#te
4
RES1LT AN, ANALYSIS - A))iti(n (' HC! t( t.e initi#! mp!e Mixture n(;n
Ob&er$#ti(n J.ite Pre*ipit#te
B#!#n*e) C.emi*#! EFu#ti(n +¿ +¿+ HCl → AgCl( s) + H ¿ Ag
1n/n(;n I
¿
- A))iti(n (' H S un)er #*i)i* *(n)iti(n Mixture n(;n
Ob&er$#ti(n B!#*/ Pre*ipit#ti(n
B#!#n*e) C.emi*#! EFu#ti(n +¿ ¿ 2 +¿+ H S → C u S( s) + H 2
Cu
1n/n(;n I
B!#*/ Pre*ipit#ti(n
2
+¿+ H
¿
+¿
2
¿ S → C u S( s) H ¿ Cu
+
6- A))iti(n (' H S un)er b#&i* *(n)iti(n Mixture n(;n
Ob&er$#ti(n J.ite Pre*ipit#ti(n
B#!#n*e) C.emi*#! EFu#ti(n +¿ 2 +¿+ 2 N H + 2 H O → Z n ( OH ) ( ) + 2 NH 3
2
2 s
Zn
1n/n(;n I
J.ite Pre*ipit#ti(n
¿
+¿
2
+¿+ 2 N H + 2 H O → Z n ( OH ) 3
2
2
Zn
( s)
+ 2 NH ¿
¿
4- A))iti(n (' CO6 Mixture n(;n
Ob&er$#ti(n J.ite Pre*ipit#ti(n
B#!#n*e) C.emi*#! EFu#ti(n 2−¿ → XCO ( ) ¿ X =Ba,Ca,Mg,Sr 2 +¿+ CO 3 s
3
¿ X
1n/n(;n I
J.ite Pre*ipit#ti(n
−¿ → XCO ( ¿ 2 +¿+ CO
2
3 s
3
¿ X
¿
4
)
X =Ba,Ca,Mg,Sr
4
5- A))iti(n (' CrO 4 Mixture n(;n
Ob&er$#ti(n J.ite Pre*ipit#ti(n
B#!#n*e) C.emi*#! EFu#ti(n 2−¿ → BaCrO ( ) ¿ 2 +¿+ CrO 4 s
4
Ba
¿
−¿
Ob&er$#ti(n Br(;n pre*ipit#te
B#!#n*e) C.emi*#! EFu#ti(n 2−¿ →CaCr O ( s ) ¿ 2 +¿+ C O
1n/n(;n I 8- A))iti(n (' C O4 Mixture n(;n
2
2
4
4
¿
Ca
1n/n(;n I
−¿
,ISC1SSION T.i& experiment ;#& *#rrie) (ut in (r)er t( i)en ti'% t.e met#! *#ti(n& b% Fu#!it#ti$e #n#!%&i&1n!i/e Fu#ntit#ti$e #n#!%&i&9 Fu#!it#ti$e #n#!%&i& '(*u&e& (n i)enti'%in t.e *(mp(nent& i(n&= t.#t pre&ent in t.e mp!e #n) t.e #m(unt (' t.e *(mp(nent& pre&ent )(e& n(t .#$e #n% &ini'i*#n*e- I)e#!!%9 t.ere #re *.emi*#! te&t& t.#t *(u!) be u&e) t( i)enti'% t.e in)i$i)u#! i(n ;it.(ut inter'eren*e (' (t.er i(n&- 1n'(rtun#te!%9 t.ere #re ('ten *(mp!i*#ti(n&- ?(r in&t#n*e9 t.e '(rm#ti(n (' %e!!(; pre*ipit#te up(n #))iti(n (' S ('ten in)i*#te& t.e pre&en*e (' C)> in t.e &(!uti(n- H(;e$er9 t.i& re#*ti(n ('ten m#&/e) ;.en t.ere #re Pb> (r Cu> i(n& pre&ent #& it ;i!! re#*t ;it. S in&te#) #n) ;i!! '(rm b!#*/ pre*ipit#te- Hen*e9 be'(re te&tin '(r #n% p#rti*u!#r i(n9 #n(t.er i(n& t.#t mi.t .#$e inter'ere) mu&t be e!imin#te 'ir&t #& t( #$(i) t.e Km#&/in e''e*tT.e e!imin#ti(n (' i(n& in # &(!uti(n *#n be #**(mp!i&.e) b% #))in # pre*ipit#tin #ent t.#t ;i!! &e!e*ti$e!% re#*t ;it. # &pe*i'i* i(n in t.e &(!uti(n #n) n(t re#*t ;it. t.e (t.er i(n& pre&ent in t.e &(!uti(n- T.e &(!i) pre*ipit#te= '(rme) t.en *#n be rem($e) t.r(u. *entri'u#ti(n #n) )e*#ntin- H(;e$er9 )ue t( t.e '#*t t.#t &e$er#! i(n& m# % be.#$e &imi!#r!%9 t.e &ep#r#ti(n (' in)i$i)u#! i(n& in *(mp!ex mixture m#% be imp(&&ib!e- In&te#)9 # r(up i(n& ;it. &imi!#r pr(pert% ;i!! be &ep#r#te) 'r(m # !#rer mixture #n) t.e &(!i) '(rme) ;i!! t.en be 'urt.er &ep#r#te) #n) re#*te) in (r)er t( *(n'irm t.e i)entit% (' t.e i(n&- ?r(m Fu#!it#ti$e #n#!%&i&9 t.e *(mp(nent in&i)e t.e /n(;n mixture #n) un/n(;n mixture *#n be )etermine)?ir&t!%9 'ir&t re#*ti(n in$(!$e& t.e #))iti(n (' .%)r(*.!(ri* #*i) t( t.e initi#! mp!e- ?(r t.e /n(;n mixture9 t.ere #re '(rm#ti(n (' ;.ite pre*ipit#te ;.i*. in)i*#te& t.e pre&en*e (' A> i(n in t.e mixture &(!uti(n- H(;e$er9 in un/n(;n mixture9 t.ere #re n( '(rm#ti(n (' ;.ite pre*ipit#te- Hen*e9 t.ere #re n( A> i(n pre&en*e in t.e mixture &(!uti(n-
Next9 t.e &e*(n) re#*ti(n i& t.e '(rm#ti(n (' &u!'i)e pre*ipit#te ;.i*. i& t.e pr()u*t (' re#*ti(n bet;een Cu> ;it. HS un)er #*i)i* *(n)iti(n- T.i& '(rm#ti(n (' &u!'i)e pre*ipit#te *#n be (b&er$e) in t.e /n(;n mixture- Hen*e9 in)i*#tin t.e pre&en*e (' Cu> i(n& in t.e /n(;n mixture- S#me (e& t( t.e un/n(;n mixture 9 ;.ere t.ere #re '(rm#ti(n (' b!#*/ *(!(ure) pre*ipit#te9 t.u&9 e$i)ent!% &.(;& t.#t t.ere #re #!&( Cu> i(n& in t.e un/n(;n mixture T.en9 t.e t.ir) re#*ti(n i& t.e re#*ti(n t( t.e &upern#t#nt (' t.e mixture up(n #))iti(n (n HS in b#&i* *(n)iti(n- T.i& re#*ti(n ;i!! !e#) t( t.e '(rm#ti(n (' ;.ite pre*ipit#te ;.i*. i& @n> i(n& t.#t .#$e re#*te) ;it. HS #n) @nOH= ;i!! pre*ipit#te (ut- T.i& re#*ti(n (**urre) in b(t.9 /n(;n mixture #n) un/n(;n mixture - T.i& in)i*#te& t.e pre&en*e (' @n> i(n& in b(t. (' t.e mixture& Next9 t.e '(urt. re#*ti(n (**urre) )ue t( #))iti(n (' CO6 int( t.e &upern#t#nt 'r(m t.e t.ir) re#*ti(n- I' *#ti(n& 'r(m An#!%ti*#! Gr(up ID #re pre&ent in t.e mixture9 it ;i!! re#*t ;it. t.e *#rb(n#te i(n9 re&u!tin in t.e '(rm#ti(n (' ;.ite pre*ipit#te- H(;e$er9 t.e #*tu#! i(n pre&ent *#nn(t be &inu!#r!% )etermine)9 t.e pre*ipit#te ;i!! be u&e) !#ter t( i)enti'% t.e t%pe (' i(n pre&ent m(re #**ur#te!%- ?(r n(;n Mixture9 t.ere #re '(rm#ti(n (' ;.ite pre*ipit#te #n) me (e& t( un/n(;n - Hen*e9 b(t. mixture *(nt#in *#ti(n& 'r(m #n#!%ti*#! r(up ID- H(;e$er9 in t.e &upern#t#nt9 it i& be!ie$e) t.#t t.ere #re N#> (r > i(n&T.en9 t.e 'i't. re#*ti(n i& t.e re#*ti(n t.#t i& reFuire) t( n#rr(; )(;n t.e t%pe (' i(n& pre&ent in t.e p#&t pre*ipit#te 'r(m t.e '(urt. re#*ti(n- It i& t.e #))iti(n ( ' CrO4 int( t.e )i&&(!$e) #*eti* #*i)- ?(r t.e /n(;n mixture9 t.ere #re '(rm#ti(n (' ;.ite pre*ipit#te9 .en*e9 in)i*#tin t.#t t.ere #re B#> i(n& in t.e /n(;n mixture- J.i!&t '(r t.e un/n(;n mixture 9 t.ere i& n( pre&en*e (' pre*ipit#te9 .en*e9 t.ere #re n( B#> i(n& in un/n(;n mixture ?urt.erm(re9 t.e &ixt. re#*ti(n i& t( )etermine t.e pre&en*e (' C#> (r M> i(n& in /n(;n mixture #n) un/n(;n mixture - T.e &upern#t#nt ;ere re#*te) ;it. CO4 #n) i' t.ere #re )#r/ br(;n pre*ipit#te9 it i& pr($e) t.#t t.ere #re C#> i(n& #n) i' t.ere #re n( pre*ipit#te '(rme)9 t.e #$#i!#b!e i(n in&i)e t.e mixture i& M>- T.ere #re )#r/ br(;n pre*ipit#te in /n(;n mixture9 .en*e9 t.ere #re C#> i(n& in&i)e t.e /n(;n mixture- H(;e$er9 in un/n(;n mixture 9 t.ere #re n( '(rm#ti(n (' pre*ipit#te9 .en*e9 t.ere #re n( C#> i(n& in un/n(;n mixture 9 but M> i(n #re pre&ent in un/n(;n mixture T.e ;e#/ne&& (' t.e met.() in t.i& experiment ;(u!) be t.e mixture ;#& n(t mixe) t.(r(u.!% (r ;#& &tirre) u&in # *(nt#min#te) !#&& r()9 re&u!tin in in*re#&e in *(nt#min#nt& ;.i*. *#n )i&rupt t.e re&u!t&- A))in t(( m#n% pre*ipit#tin #ent #!&( *#n inter'ere ;it. t.e re&u!t #& it *#n *#u&e un)e&ire) &i)e re#*ti(n- Impr(per &ep#r#ti(n #n) ;#&.in (' pre*ipit#te i& #!&( (ne (' t.e m(&t *(mm(n err(r t.#t mi.t .#$e (**urre)- Next9 .e#tin (' &(!uti(n mu&t ne$er be b(i!e) in t.e mi*r(*entri'ue tube m#% re#*t ;it. t.e &ub&t#n*e (r me!t )ue t( e!e$#te) temper#tureHen*e9 .e#tin mu&t be *#rrie) (ut in t.e te&t tube-
CONCL1SION In t.e /n(;n mixture9 t.ere #re A> i(n&9 Cu> i(n&9 @n> i(n&9 B#> i(n& #n) #!&( C#> i(n& ;.ere#& in t.e un/n(;n mixture 9 t.ere #re Cu> i(n&9 @n> i(n& #n) M> i(n&-
RE?ERENCES - .ttp:;;;-)(*br(;n-in'(p#e6C.emi*#!Te&t& - Mur($9 S- #n) Ste)ee9 B-9 334- Experiment& #n) Exer*i&e& in B#&i* C.emi&tr%- 8t. E)iti(n= Ne; 0er&e%: 0(.n Ji!e% S(n&9 In*-9 3. Gre*(9 T-G-9 Ri*/#r) L- H- #n) Jei&& G-S-9 33- Experiment& in Gener#! C.emi&tr%: Prin*ip!e& #n) M()ern App!i*#ti(n&- t. E)iti(n= Ne; 0er&e%: Prenti*e H#!!
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