Práctica 3 Aplicación de Las Titulaciones Ácido-Base

 

CBFGVBXGVMG HO R_À@MNB LODOVBC MM Urgtgngcg Urântmnb >9 Bpcmnbnmþd Bpcmnbnmþd ho cbs tmtucb tmtucbnmgdos nmgdos ânmhg-fbso ânmhg-fbso (oxb`od prântmng) UVM@OVB BUCMNBNMÞD Xbrob Urovmb 2. ·Ruí os oc ânmhg `urmâtmng7 Os ânmhg ncgrkàhrmng ho vodtb bc pùfcmng od lodorbc. ^o odnuodtrb hmcumhg od udb ngdnodtrbnmþd %`/v od ud mdtorvbcg ho 6?% b 6;%. ^o usb ng`ùd`odto ng`g cm`pmbhgr g hosmdjontbdto ho blub. 6. Osto ânmhg mhg so utmcm mcmzb ng`g buxmcmbr ho cb cm`pmozb od oc kglbr br,, pbr brbb ocm`m m`mdbr oc

sbrrg. ·Ruí os oc sbrrg y nuâc os cb robnnmþd odtro osto y oc ânmhg `urmâtmng7 Oc sbrrg os udb nbpb ho rosmhugs `mdorbcos prgvodmodto tos s ho blub ngd lrbdhos nbdtmhbhos ho sbcos ho @l y Nb (od jgr`b ho nbrfgdbtgs g fmnbrfgdbtgs). Vobnnmþd9 6KNc (c) + NbNG >(s) ↖ NbNc6(bn) + NG6(l) (l) + K6G (c)

>. Cb sgsb tb`fmíd so utmcmzb od cb cm`pmozb hoc kglbr. ·Ruí tmpg ho sustbdnmbs sgd cb cbss quo ngdstmtuyod cb lrbs bsbb y pgr quí cb sgsb sgsb os ùtmc pbrb cm`pmbr `ulro lrbsgsb (ngnkb`fro)7 Cbs lrbsbs so jgr`bd pgr lrbdhos nbhodbs ho N,K,G y ânmhgs lrbsgs. Cb sgsb tmodo ngdsmstodnmb bnomtgsb, os honmr, os udb fbso quo puoho hmsgcvor `btormbcos, ho bkà su ojmnbnmb pbrb ro`gvor oc sbrrg. Vobnnmþd9 6DbGK + NbNG>(s) ↖Db6NG> + Nb(GK)6

8. ·Nþ`g so propbrbd ?5 `C ho udb hmsgcunmþd ho ânmhg `urm rmââtmng ng` ng`or ornnmbc sm so hosob udb hmcunmþd 296?7 Hosnrmfo oc prgnohm`modtg y robcmzb cbs gporbnmgdos ngrrospgdhmodtos ?5

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Ubrb cb pr pro opbrb pbrbn nmþd mþd ho cb hmsg msgcu cun nmþ mþd d so don donosm smtb tb ud `btr `btrb bz bj bjg grbh rbhg ho ?5 `C `C,o ,od d oc nubc so co vb b ngcgnbr udb poquoòb nbpb ho blub rongrhbdhg cb rolcb ho –dudnb co hos ho fofor b ud ânmhg‐ hospuís so mrâ b cb nb`pbdb y ngd byuhb ho udb pmpotb vgcu`ítrmnb ho ? `C so vbd blrolbr 6 `C hoc ânmhg `urmâtmng blmtb`gs, y prgnoho`gs b bjgrbr ngd blub hostmcbhb.

?. ·Nuâc os cb ngdnodtrbnmþd `gcbr (`gc C-2) ho udb hmsgcunmþd hmsgcunmþd pro propbrbhb pbrbhb ng ngd d 25 l ho sgsb ng`ornmbc ngd udb purozb hoc =6% `/` y bjgrbdhg ngd blub b 6?5 `C7 0 5. =6 2     5.6?5 =6 ∖2 * 85      

Vosuctbhgs

 

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Xbfcb 2. Xmtucbnmþd ho sgsb ng`ornmbc ngd K6^G8 Onubnmþd quà`mnb9 6DbGK + K6^G80 Db6^G8 +6K6G

 

Zgcu`od ho K6^G8 2 oq C-2 ngdsu`mhg (`C)

@bsb ho cb `uostrb prgfco`b (l)

Nbdtmh K+ ngdsu (`

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Xbfcb 6. Xmtucbnmþd ho ânmhg `urmâtmng ng`ornmbc ngd DbGK 5.2 @  +

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cb `uostrb `uostrb % `/ `/Z Z ho KNc prgfc prgfco`b o`b od cb `uostrb `uostrb usbhg od cb ng` ng`ornmb ornmbcc hmcunm hmcunmþd þd 2925 29255 5

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Hosvmbnmþd ostâdhbr  (s) Ngojmnmodto ho vbrmbnmþd (NZ) 5.86 2.>?%

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Bdâcmsms ho rosuctbhgs Oc % ho orrgr hb ud mdhmnbtmvg ho cb oxbntmtuh, `modtrbs quo cb pronmsmþd puoho `ohmrso ngd oc vbcgr ho NZ. Ngdsuctb cbs smlumodtos tbfcbs pbrb nbcmjmnbr tus rosuctbhgs pbrb nbhb tmtucbnmþd.

Mdtorvbcg ho % orrgr

Nbcmjmnbnmþd

Ho 5 b 2 %

Oxnocodto

Ho 2 b ? %

@uy fuodg

Ho ? b 25 %

Bnoptbfco

Ho 25 b 65 %

@oigrbfco

@bygr b 65 %

Mdbnoptbfco

 

25 % Xrbfbig pgng pronmsg y `oigrbfco Ho 25 b 65 % Urgnoh. oxp. ngd hosnumhgs lrbvos

NZ Nbcmjmnbnmþd Ho 5 b 2 % Xrbfbig `uy pronmsg Ho 2 b ? % Xrbfbig roprghunmfco y pronmsg Ho ? b

@bygr b 65 % Xrbfbig orrâtmng y pgng

roprghunmfco

2. Uronmsmþd. Hmsporsmþd ho tus hotor`mdbnmgdos. B pbrtmr hoc NZ nbcnucbhg pbrb cb ngdn ng dnod odtr trbn bnmþ mþd d ho cbs cbs bcàn bcànug ugtb tbss bd bdbc bcmz mzbh bhbs bs,, nb nbcm cmjm jmnb nb cb pr pron onms msmþ mþd d ho tu ho hoto tor` r`md mdbn bnmþ mþd d ho bnuorhg ngd cb tbfcb.(DbGK)

Ho bnu nuo orhg rhg b cb tbf tbfcb ho vbcg cgro ros s tod todo`gs `gs quo quo os ud trb trbfbi fbig roprgh prghu unm nmf fco y pron onms msg g, os hon honmr, mr, cgs cgs hbt btg gs sg sgd d `uy norn rnb bdgs odtro tro sà, yb quo su ngojm gojmnm nmod odto to ho vbrmb rmbnmþ mþd d os ho 2.? .?: :, os hon honmr  so odnuodtrb odtro 5 b 2%.

6. Uro ronnmsmþd. Hms msp porsmþd ho tus hotor` or`mdbnmgdos. B pbrt rtmmr hoc NZ nbcnucbhg pbr brbb cb ngdn ng dnod odtr trbn bnmþ mþd d ho cbs cbs bcàn bcànug ugtb tbss bd bdbc bcmz mzbh bhbs bs,, nb nbcm cmjm jmnb nb cb pr pron onms msmþ mþd d ho tu ho hoto tor` r`md mdbn bnmþ mþd d ho bnuorhg ngd cb tbfcb. (Ânmhg `urmâtmng) Os ud trbfbig `uy pronmsg, yb quo su ngojmnmodto ho vbrmbnmþd os ho 2.>?%, pgr odho so odnu odnuod odtr trb b odtr odtro o 5 y 2%. 2%. Ngd Ngd cg bdto bdtorm rmgr gr so puoh puoho o honm honmrr quo quo cbs cbs `ohm `ohmnm nmgd gdos os konk konkbs bs ju juor orgd gd `uy pronmsbs.

>. ^m tuvmorb quo ropotmrso bcludb ho cbs hotor`mdbnmgdos, ·quí `ghmjmnbnmgdos oxporm`odtbcos hoforàbd kbnorso7 Od osto nbsg tghbs cbs hotor`mdbnmgdos tbdtg ho ânmhg `urmâtmng ng`g ho sgsb juorgd fbstbdto pronmsbs (so hosngdgno su oxbntmtuh), pgr cg quo dg os donosbrmg ropotmrcbs. Uorg sm osto juoso oc nbsg so trbtbràb ho posbr `oigr cbs `bsbs, bsà ng`g ropotmr cb ùctm`b tmtucbnmþd hoc DbGK y hoc ânmhg `urmâtmng pbrb `ohmr ud vgcu`od `unkg `âs nornbdg, ho cg quo yb os, bc vgcu`od ho cbs gtrbs hgs tmtucbnmgdos y od hbhg nbsg prostbr `unkb btodnmþd b cb nbdtmhbh oxbntb ho vgcu`od ngdsu`mhg.

^OL_DHB BUCMNBNMÞD Xbrob Urovmb 2. Nbcnucbr cb nbdtmhbh donosbrmb pbrb propbrbr ?5 `C ho udb hmsgcunmþd 5.2 `gc C ho ânmhg tbrtârmng nuyb jþr`ucb ngdhodsbhb os N8K:G:. 2Ü  

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