Cataliza omogena prin acizi si baze, Teoria transferului de protoni ...np1033 tsbasedon0 tsnext16 Body Text 2SSIttrsidtbl trsid945677trsid11536317trsid12603956trsid13976529 SIttgenerator Microsoft ord 10.0.2627SItinfoIttitle Acizii si BazeleSItauthor DSItoperator DanielSItcreatimtyr2002tmo5tdy15thr21tmin8SItrevti mtyr2002tmo5tdy15thr21tmin8SItversion2SItedmins0SIt nofpages4SItnofords637SItnofchars3637SIttcompany PERSONALSItnofcharss4266SItvern16437SStpaper11906t paperh16838tmargl1417tmargr1417tmargt1417tmargb1417 tltrsect tidoctrltftnbjtaenddoctnoxlattoyentexpshrtntnoultr lspctdntblnsbdbtnospaceforulthyphcaps0tformshadetho rzdoctdgmargintdghspace180tdgvspace180tdghorigin141 7tdgvorigin1417tdghsho1tdgvsho1tjexpandtviekind1tvi escale100tpgbrdrheadtpgbrdrfoottnolnhtadjtbltrsidro ot11536317 tfet0tltrpar tsectd tltrsecttlinex0theadery708tfootery708tcolsx708tend nheretsectlinegrid360tsectdefaultcltsftnbj Ittpnseclvl1tpnucrmtpnqctpnstart1tpnindent720tpnha ng Itpntxta .SSIttpnseclvl2tpnucltrtpnqctpnstart1tpnindent720t pnhang Itpntxta .SSIttpnseclvl3tpndectpnqctpnstart1tpnindent720tpn hang Itpntxta .SSIttpnseclvl4tpnlcltrtpnqctpnstart1tpnindent720t pnhang Itpntxta SSIttpnseclvl5tpndectpnqctpnstart1tpnindent720tpnh ang Itpntxtb SItpntxta SSIttpnseclvl6tpnlcltrtpnqctpnstart1tpnindent720tp nhang Itpntxtb SItpntxta SSIttpnseclvl7tpnlcrmtpnqctpnstart1tpnindent720tpn hang Itpntxtb SItpntxta SSIttpnseclvl8tpnlcltrtpnqctpnstart1tpnindent720tp nhang Itpntxtb SItpntxta SSIttpnseclvl9tpnlcrmtpnqctpnstart1tpnindent720tpn hang Itpntxtb SItpntxta SStpardtplain tltrpartqc tli0tri0tidctlpartaspalphataspnumtfaautotadjustrig httrin0tlin0titap0 trtlchtfcs1 taf0tafs24talang1025 tltrchtfcs0 tfs24tlang2057tlangfe1033tcgridtlangnp2057tlangfen p1033 Itrtlchtfcs1 taf0 tltrchtfcs0 tlang1033tlangfe1033tlangnp1033tinsrsid13976529 tpar Stpardtplain tltrparts1tqc tli0tri0tsb120tsa120tkeepntidctlpartaspalphataspnu mtfaautotoutlinelevel0tadjustrighttrin0tlin0titap0 trtlchtfcs1 tabtaf0tafs24talang1025 tltrchtfcs0 tbtf36tfs36tlang1033tlangfe1033tcgridtlangnp1033tl angfenp1033 Itrtlchtfcs1 taf0 tltrchtfcs0 tb0tf0tfs24tlang1024tlangfe1024tnoprooftinsrsid139 76529tcharrsid945677 Acizii si Bazeletpar Stpardtplain tltrpartql tli0tri0tsb120tsa120tidctlpartaspalphataspnumtfaau totadjustrighttrin0tlin0titap0 trtlchtfcs1 taf0tafs24talang1025 tltrchtfcs0 tfs24tlang2057tlangfe1033tcgridtlangnp2057tlangfen p1033 Itrtlchtfcs1 taf0 tltrchtfcs0 tlang1024tlangfe1024tnoprooftlangnp1033tinsrsid139 76529tcharrsid945677 tpar ttab Acizi sunt substante care in solutie apoasa pun in libertate prot.0oni HSItrtlchtfcs1 taf0 tltrchtfcs0 tup6tlang1024tlangfe1024tnoprooftlangnp1033tinsrsi d13976529tcharrsid945677 SItrtlchtfcs1 taf0 tltrchtfcs0 tlang1024tlangfe1024tnoprooftlangnp1033tinsrsid139 76529tcharrsid945677 .tpar ttab Bazele sunt substante care in solutie apoasa pun in libertate ioni de hidroxil OHSItrtlchtfcs1 taf0 tltrchtfcs0 tup6tlang1024tlangfe1024tnoprooftlangnp1033tinsrsi d13976529tcharrsid945677 -SItrtlchtfcs1 taf0 tltrchtfcs0 tlang1024tlangfe1024tnoprooftlangnp1033tinsrsid139 76529tcharrsid945677 .tpar Stpard tltrpartqc tli0tri0tsb120tsa120tidctlpartaspalphataspnumtfaau totadjustrighttrin0tlin0titap0 Itrtlchtfcs1 taf0 tltrchtfcs0 tlang1024tlangfe1024tnoprooftlangnp1033tinsrsid139 76529tcharrsid945677 tpar Stpardtplain tltrparts2tqc tli0tri0tsb120tsa120tkeepntidctlpartaspalphataspnu mtfaautotoutlinelevel1tadjustrighttrin0tlin0titap0 trtlchtfcs1 tabtaf0tafs24talang1025 tltrchtfcs0 tbtf36tfs28tlang1033tlangfe1033tcgridtlangnp1033tl angfenp1033 Itrtlchtfcs1 taf0 tltrchtfcs0 tb0tf0tfs24tlang1024tlangfe1024tnoprooftinsrsid139 76529tcharrsid945677 Cataliza omogena prin acizi si bazetpar Stpardtplain tltrpartqc tli0tri0tsb120tsa120tidctlpartaspalphataspnumtfaau totadjustrighttrin0tlin0titap0 trtlchtfcs1 taf0tafs24talang1025 tltrchtfcs0 tfs24tlang2057tlangfe1033tcgridtlangnp2057tlangfen p1033 Itrtlchtfcs1 taf0 tltrchtfcs0 tlang1024tlangfe1024tnoprooftlangnp1033tinsrsid139 76529tcharrsid945677 tpar Stpardtplain tltrparts15tql tli0tri0tsb120tsa120tidctlpartaspalphataspnumtfaau totadjustrighttrin0tlin0titap0 trtlchtfcs1 tabtaf0tafs24talang1025 tltrchtfcs0 tbtf36tfs28tlang1033tlangfe1033tcgridtlangnp1033tl angfenp1033 Itrtlchtfcs1 taf0 tltrchtfcs0 tb0tf0tfs24tlang1024tlangfe1024tnoprooftinsrsid139 76529tcharrsid945677 ttab Rolul important al catalizei, pentru mersul reactiilor chimice, este cunoscut.Aici vom aminti ca t93un catalizator este o substanta care nu ia parte in mod vizibil la reactie.El se regaseste neschimbat dupa reactie.El nu apare in ecuatia chimica a reactiei si nici nu se afla in vreun raport sthoechiometric aparent cu substantele care reactioneaza.Catalizatorul nu poate accelera sau declansa decat reactii termodinamic posibile, adica reactii spontane, decurgand liber in sensul stabilirii unei echilibru, deci reactii cu entalpie libera negativa.In reactiile reversibile, catalizatorul eccelereaza deopotriva cele doua reactii antagoniste, asa ca echilibrul se stabileste mai repede.Catalizatorul intervine chimic in mersul reactiei.Unii catalizatori determina reactii ce nu au loc in absenta lor.De multe ori, catalizatori diferiti provoaca reactii diferite ale aceleiasi substantet94.tpar Stpardtplain tltrpartql tli0tri0tsb120tsa120tidctlpartaspalphataspnumtfaau totadjustrighttrin0tlin0titap0 trtlchtfcs1 taf0tafs24talang1025 tltrchtfcs0 tfs24tlang2057tlangfe1033tcgridtlangnp2057tlangfen p1033 Itrtlchtfcs1 taf0 tltrchtfcs0 tlang1024tlangfe1024tnoprooftlangnp1033tinsrsid139 76529tcharrsid945677 tpar Stpardtplain tltrparts2tqc tli0tri0tsb120tsa120tkeepntidctlpartaspalphataspnu mtfaautotoutlinelevel1tadjustrighttrin0tlin0titap0 trtlchtfcs1 tabtaf0tafs24talang1025 tltrchtfcs0 tbtf36tfs28tlang1033tlangfe1033tcgridtlangnp1033tl angfenp1033 Itrtlchtfcs1 taf0 tltrchtfcs0 tb0tf0tfs24tlang1024tlangfe1024tnoprooftinsrsid139 76529tcharrsid945677 Teoria transferului de protonitpar Stpardtplain tltrpartqc tli0tri0tsb120tsa120tidctlpartaspalphataspnumtfaau totadjustrighttrin0tlin0titap0 trtlchtfcs1 taf0tafs24talang1025 tltrchtfcs0 tfs24tlang2057tlangfe1033tcgridtlangnp2057tlangfen p1033 Itrtlchtfcs1 taf0 tltrchtfcs0 tlang1024tlangfe1024tnoprooftlangnp1033tinsrsid139 76529tcharrsid945677 tpar Stpardtplain tltrparts16tql tfi720tli0tri0tsb120tsa120tidctlpartaspalphataspnu mtfaautotadjustrighttrin0tlin0titap0 trtlchtfcs1 tabtaf0tafs24talang1025 tltrchtfcs0 tbtf36tfs28tlang1033tlangfe1033tcgridtlangnp1033tl angfenp1033 Itrtlchtfcs1 taf0 tltrchtfcs0 tb0tf0tfs24tlang1024tlangfe1024tnoprooftinsrsid139 76529tcharrsid945677 In teoria clasica a disociatiei electrolitice, un acid se defineste ca o specie chimica ce da nastere, la dizolvarea in apa, unui ion de hidrogen, H, iar o baza, ca o specie ce da nastere, in acelasi dizolvant, unui ion hidroxil,HO-.In afara de faptul ca aceasta definitie limiteaza fenomenul la solutii apoase, ea este cu totul improprie pentru o reprezentare cantitativa a catalizei prin acizi si baze. De altfel, ionii de hidrogen, adica protoni fara invelis de electroni, desi pot avea o viata trecatoare in stare gazoasa , nu pot exista liber in solutie a... Download |