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NITRIMETRI.ppt
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NITRIMETRI.ppt
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NITRIMETRI OLEH : AYU TRISNAWATI Edi Basrianto Sri Kiswandar Diah Novitasari
PENDAHULUAN
Nitri!tri !r"#a$an %ara ana&isa vo&"!tri 'an( )!rdasar$an #ada r!a$si #!)!nt"$an (ara dia*oni"+ ,ara dia*oni" it" t!r)!nt"$ dari hasi& r!a$si antara s!n'awa 'an( !n(and"n( ("("s ain aroatis )!)as- #ada s"h" di )awah ./01 da&a s!n'awa asa+ Titrasi dia*otasi )!rdasar$an #ada #!)!nt"$an (ara dia*oni" dari ("("s ain aroatis )!)as 'an( dir!a$si$an d!n(an asa nitritdiana asa nitrit ini di#!ro&!h d!n(an %ara !r!a$si$an natri" nitrit d!n(an s"at" asa+
S!n'awa2s!n'awa 'an( da#at dit!nt"$an d!n(an !tod! nitri!tri antara &ain (o&on(an s"&3onaida s!#!rti s"&3a!ra*in- s"&3adia*in dan s"&3ani&aid+ S!n'awa2s!n'awa ini da&a d"nia 3arasi san(at )!ran3aat s!#!rti s"&3ani&aid san(at )!r("na s!)a(ai o)at antii$ro)a+ S!&ain s!n'awa2s!n'awa t!rs!)"t- #!anis )"atan s!#!rti natri" si$&aat )isa dit!ta#$an $adarn'a !n(("na$an !tod! nitri!tri+ M!&ihat $!("naann'a a$a nitri!tri !r"#a$an sa&ah sat" !tod! ana&isis 'an( di#!r&"$an "nt"$ !n(ana&isis s!n'awa2s!n'awa t!rs!)"t+
Nitri!tri ada&ah !tod! titrasi 'an( !n(("na$an NaNO4 s!)a(ai #!ntit!r da&a s"asana asa+ Pada s"asana asa- NaNO 4 )!r")ah !n5adi HNO4 6asa nitrit7 'an( a$an )!r!a$si d!n(an sa#!& 'an( dititrasi dan !)!nt"$ (ara dia*oni"+ P!)!nt"$an (ara dia*oni" )!r5a&an &a)at- o&!h $ar!na it" "nt"$ !#!r%!#atn'a da#at dita)ah$an KBr s!)a(ai $ata&is+
R!a$si #!)!nt"$an (ara dia*oni" ada&ah s!)a(ai )!ri$"t : NaNO4 8
H1& 9 Na1& 8 HONO
Ar2NH4 8
HONO 8 H1& 9 Ar-N2Cl 6(ara dia*oni"7 8 H4O
Prinsi# titrasi nitri!tri ada&ah r!a$si dia*otasi- 'ait" : P!)!nt"$an
(ara dia*oni" dari ("("s ain aroati$ #ri!r 6ain aroati$ s!$"nd!r dan ("("s nitro aroati$7 P!)!nt"$an
s!n'awa nitrosain! dari ain a&i3ati$ s!$"nd!r+ 1ontoh *at 'an( !#"n'ai ("("s ain a&i3atis ada&ah Na si$&aat+ P!)!nt"$an
s!n'awa a*o dari ("("s hidra*ida+ 1ontoh *at 'an( !i&i$i ("("s hidra*ida ada&ah INH+ P!as"$an
("("s nitro 'an( 5aran( t!r5adi $ar!na s"&itn'a titrasi d!n(an !n(("na$an asa nitrit da&a s"asana asa
S'arat2s'arat Titrasi Nitri!tri Ha&2ha& 'an( #!r&" di#!rhati$an da&a titrasi nitri!tri ada&ah : S"h" K!asaan K!%!#atan
R!a$si
Sa#!& S!n'awa2s!n'awa 'an( da#at diana&isis !n(("na$an titrasi nitri!tri- antara &ain : P!n!ta#an
$adar s!n'awa2s!n'awa 'an( !#"n'ai ("("s ain aroatis #ri!r )!)as s!#!rti s"&3ani&aid+ P!n!ta#an
$adar s!n'awa2s!n'awa 'an( ana ("("s ain aroati$ t!ri$at d!n(an ("("s &ain s!#!rti s"$sini& s"&3atia*o&- 3ta&i& s"&3atia*o& dan #aras!tao&+ Pada #!n!ta#an $adar s!n'awa 'an( !#"n'ai ("("s aroati$ 'an( t!ri$at d!n(an ("("s &ain s!#!rti s"$sini& s"&3atia*o& har"s dihidro&isis &!)ih dah"&" s!hin((a di#!ro&!h ("("s ain aroatis )!)as "nt"$ s!&an5"tn'a )!r!a$si d!n(an natri" nitrit da&a s"asana asa !)!nt"$ (ara dia*oni"+ S!n'awa
s!n'awa 'an( !#"n'ai ("("s nitro aroatis s!#!rti $&ora3!ni$o&+ S!n'awa s!n'awa nitro aroatis da#at dit!ta#$an $adarn'a s!%ara nitri!tri s!t!&ah dir!d"$si t!r&!)ih dah"&" "nt"$ !n(hasi&$an s!n'awa ain aroatis #ri!r+ K&ora3!ni$o& 'an( !#"n'ai ("("s nitro aroatis dir!d"$si t!r&!)ih dah"&" d!n(an ;n < H1& "nt"$ !n(hasi&$an s!n'awa ain aroatis #ri!r 'an( )!)as 'an( s!&an5"tn'a )!r!a$si d!n(an asa nitrit "nt"$ !)!nt"$ (ara dia*oni"+ Da&a =ara$o#! Indon!sia- titrasi nitri!tri di("na$an "nt"$ !n!ta#$an $adar : )!n*o$ain> #ria$"in 3os3at dan s!diaan ta)!&tn'a > #ro$ain H1& > s"&3as!taid > natri" s"&3as!taid > s"&3a!ta*in > s"&3ado$sin > s"&3a!to$sa*o& > t!rtra$ain > dan t!tra$ain H1&
Pros!d"r K!r5a
Pros!d"r K!r5a .+ Ti)an( s!$saa &!)ih $"ran( /?? ( s"&3onaid ata" s!5"&ah t!rt!ra #ada asin(2asin( ono(ra@ 4+ Mas"$$an $!da&a (!&as #ia&a 'an( s!s"ai + Ta)ah$an 4? & asam klorida P dan /? & air- ad"$ hin((a &ar"t- din(in$an hin((a s"h" &!)ih $"ran( ./ ?1 + Titrasi s!%ara #!r&ahan d!n(an natrium nitrit 0,1 M LV 'an( s!)!&"n'a t!&ah di)a$"$an t!rhada# S"&3onaida BP=I /+ T!ta#$an titi$ a$hir s!%ara !&!$tro!tri$ !n(("na$an !&!$trod! 'an( s!s"ai 6P&atina2Ka&o!& ata" P&atina2P&atina7 C+ T!#at$an "5"n( )"r!t di)awah #!r"$aan &ar"tan "nt"$ !n(hindari o$sidasi o&!h "dara t!rhada# natri" nitrit dan ad"$ #!r&ahan dan #!rtahan$an s"h" &!)ih $"ran( ./ ?1 + Pada titrasi an"a& ta)ah$an titran hin((a . & !nd!$ati titi$ a$hir$!"dian ta)ah$an s!tia# $a&i ?-. & titran d!n(an s!&an( wa$t" tida$ $"ran( dari . !nit+
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