Siringes la tuuri karo - Lifaaqa 1
Diyaarinta xalka haraaga ethylene oxide
0.1mol/L hydrochloric acid: ku milo 9ml hydrochloric acid ilaa 1000ml.
0.5% xal periodate: miisaan 0.5g oo ah periodate iyo milo ilaa 100ml.
Sodium thiosulfate xal: miisaan 1g of sodium thiosulfate iyo milo ilaa 100ml.
10% sodium sulfite xal: miisaan 10. 0g anhydrous sodium sulfite, milaan oo ku qas 100ml.
Xalka tijaabada sulfurous acid Magenta: miisaan 0.1g oo fuchsin aasaasiga ah oo ku dar 120ml oo biyo kulul ah si aad u milmaan.Kadib qaboojinta, ku dar 20ml oo ah 10% sodium sulfite xal iyo 2ml oo ah hydrochloric acid gudcurka.Xalka imtixaanku waa inuu noqdaa mid aan midab lahayn.Haddii la ogaado inuu casaan yahay, waa in dib loo diyaariyaa.
Xalka saamiga Ethylene glycol ee caadiga ah: qaado dhalada qalalan oo nadiif ah oo 50ml ah, ku dar qiyaastii 30ml oo biyo ah, si sax ah u miisaam, qaado 0.5ml ethylene glycol, si deg deg ah ugu dar dhalada, rux, miisaan, farqiga u dhexeeya laba miisaan waa miisaanka ku jira xalku, ku dar biyo miisaanka, isku dar, oo xisaabi xajintiisa si waafaqsan qaacidada soo socota:
C＝W/50 × kun
C: Glycol heerka saamiga saamiga g / l;
W: Miisaanka ethylene glycol ee xalka g
Xalka caadiga ah ee Ethylene glycol: si sax ah u qaado 1.0ml ee xalalka saamiga caadiga ah, kuna qas 1000ml biyo.
Diyaarinta reagent si fudud oksaydhaysan:
a.Ku qas sulfuric acid (20%): Qaado H2SO4128ml, si tartiib ah u duri 500ml, oo ku milo 1000ml ka dib qaboojinta.
b.Tilmaamaha istaarijka: qaado 0.5g oo istaarij milmaya, ku milan 100ml oo biyo ah, kuleyl oo karkari, ka dibna ku qabooji heegan (waa in si cusub loo diyaariyo marka si ku meel gaar ah loo isticmaalo)
c.Maaddada Potassium permanganate: qaado 3.3gKMnO4, ku dar 1050ml oo biyo ah, karkari 15min, ku dar biyo 1050ml, u daa in uu istaago in ka badan laba maalmood ka dib marka la xidho, ku shaandhee funnel dhalo yar yar, rux, oo qiyaas feejignaantiisa.
Cabbiridda: Qaado 0.25g ee tixraaca sodium oxalate ee la qalajiyey si aad u miisaan joogto ah 1050C, si sax ah u miisaamee, ku dar 100ml oo ah sulfuric acid (8+92) oo walaaq si aad u milmaan.Si degdeg ah ugu dar 25ml ee KMnO4 xal caadi ah si loogu qiyaaso xalka buretta.Ka dib marka uu dhoco, kuleyl ilaa 650C oo sii wad titrating ilaa uu xalku casaan noqdo oo aan isbeddelin ilaa 30s.Meesha ugu dambeysa ee titration, heerkulka xalku waa inuusan ka hooseynin 550C, baaritaanka bannaan waa in la sameeyaa isku mar.6.7mg kasta oo sodium oxalate ah waxay u dhigantaa 1ml ee 0.02mol/L KMnO4 xal caadi ah.Xalka dhabta ah ee xalkan waxaa loo xisaabiyaa iyadoo loo eegayo isticmaalka xalkan iyo xaddiga sodium oxalate ee la qaatay.
d.C (KMnO4)=0.002 mol/L: Qaado 0.02 mol/L KMnO4 oo ku dar biyo si aad u milmaan 10 jeer kahor isticmaalka
e.Sodium thiosulfate (0.1 mol/L): miisaanka 26g Na2S2O3.5H2O ama 16g anhydrous Na2S2O3, ku dar 0.2g anhydrous sodium carbonate, ku milmi biyo 1000ml, si tartiib ah u kari 10min, qabooji, biyo ku dar 1000ml ka dib, filter toddobaadyo, oo qiyaas feejignaantiisa.
Cabiritaanka: miisaan 0.18g oo tixraac ah potassium dichromate oo la qalajiyey 1200C ilaa miisaan joogto ah.Si sax ah u miisaanKu rid weelka lagu cabbiro iodine, ku milmi 25ml oo biyo ah, ku dar 2g oo potassium iodide ah iyo 20ml oo ah sulfuric acid (20%) lagu daraa, si fiican u rux, meel mugdi ah dhig 10min, ku dar 150ml oo biyo ah, titrate. oo leh xalka Na2S2O3 ee la diyaariyey [c (Na2S2O3) ＝ 0.1 mol/L], ku dar 2ml oo xal istaarij ah (10g/L) meesha ugu dambeysa, sii wad titsiga ilaa uu xalku ka beddelo buluug ilaa cagaar dhalaalaya, oo samee imtixaan maran at isku mar.1ml kasta oo Na2S2O3 (0.1 mol/L) waxay u dhigantaa 4.9031mg oo ah potassium dichromate.Isku-duubnaanta xalkan waxaa loo xisaabiyaa iyadoo loo eegayo isticmaalka xalkan iyo xaddiga potassium dichromate ee la qaatay.
f.C(Na2S2O3)
Waqtiga boostada: Oct-04-2022
