Syringes enwere ike iwepụ - Ihe odide ntụkwasị 1
Nkwadebe nke ethylene oxide residual solution
0.1mol/L hydrochloric acid: itughari 9ml hydrochloric acid ka 1000ml.
0.5% ngwọta nke oge: tụọ 0.5g nke periodate na itughari ka 100ml.
Sodium thiosulfate ngwọta: tụọ 1g nke sodium thiosulfate na itughari ka 100ml.
10% sodium sulfite ngwọta: tụọ 10.0g anhydrous sodium sulfite, igbari ya na itughari ya na 100ml.
Ngwọta ule Magenta sulfurous acid: tụọ 0.1g nke fuchsin bụ isi ma tinye 120ml nke mmiri ọkụ ka ọ gbazee.Mgbe ọ dị jụụ, tinye 20ml nke 10% sodium sulfite solution na 2ml nke hydrochloric acid n'ime ọchịchịrị.Ngwọta ule kwesịrị ịbụ enweghị agba.Ọ bụrụ na a chọpụta na ọ na-acha ọbara ọbara, a ga-edozikwa ya.
Ethylene glycol ọkọlọtọ ngwaahịa ngwọta: were mpụga akọrọ ma dị ọcha 50ml volumetric flask, gbakwunye ihe dị ka 30ml mmiri, tụọ ya nke ọma, were 0.5ml ethylene glycol, ngwa ngwa tinye ya na karama, fegharịa ya, tuo ya, ihe dị iche n'etiti arọ abụọ bụ arọ dị na ngwọta, tinye mmiri n'ọ̀tụ̀tụ̀, gwakọta ya, gbakọọ mkpokọta ya dị ka usoro a si dị:
C＝W/50 × otu puku
C: Glycol ọkọlọtọ ngwaahịa ngwọta mkpokọta g / l;
W: Ibu ethylene glycol na ngwọta g
Ethylene glycol ọkọlọtọ ngwọta: were nke ọma were 1.0ml nke ọkọlọtọ ngwaahịa ngwọta, na itughari ka 1000ml na mmiri.
Nkwadebe nke reagent oxidized dị mfe:
a.Na-agbaze sulfuric acid (20%): Were H2SO4128ml, jiri nwayọọ nwayọọ gbanye 500mL, na itughari ka 1000mL mgbe jụrụ oyi.
b.Ihe ngosi starch: were 0.5g nke starch soluble, gbarie ya na 100ml mmiri, kpoo ya ma sie ya, wee kpoo ya maka njikere (a ga-edozi ya ọhụrụ mgbe ejiri ya nwa oge)
c.Potassium permanganate ngwọta: were 3.3gKMnO4, tinye 1050ml mmiri, obụpde 15min, tinye mmiri na 1050ml, hapụ ya ka o guzoro ihe karịrị ụbọchị abụọ ka akara, na-nza ya na microporous ugegbe funnel, fegharịa ya, na calibrate ya itinye uche.
Nhazi: Were 0.25g nke ntụaka sodium oxalate akpọnwụwo ka ọ dị arọ mgbe niile na 1050C, tụọ ya nke ọma, tinye 100ml nke sulfuric acid ngwọta (8+92) wee kpalie ịgbaze ya.Tinye ngwa ngwa 25ml nke ọkọlọtọ ọkọlọtọ KMnO4 ka a ga-edozi ya na ngwọta site na buret.Mgbe agwụchara, kpoo ya ruo 650C ma gaa n'ihu na-atụgharị ruo mgbe ngwọta ahụ na-acha ọbara ọbara ma nọgide na-agbanweghị maka 30s.N'ebe njedebe nke titration, ngwọta ngwọta agaghị adị ala karịa 550C, a ga-emekwa ule oghere n'otu oge ahụ.Kwa 6.7mg nke sodium oxalate bụ 1ml nke 0.02mol/L KMnO4 ọkọlọtọ ngwọta.A na-agbakọ mkpokọta ngwọta nke ngwọta a dị ka oriri nke ngwọta a na ọnụọgụ sodium oxalate weere.
d.C (KMnO4)=0.002 mol/L: Were 0.02 mol/L KMnO4 tinye mmiri ka ọ gbazee ya ugboro 10 tupu eji ya.
e.Sodium thiosulfate (0.1 mol/L): tụọ 26g Na2S2O3.5H2O ma ọ bụ 16g anhydrous Na2S2O3, tinye 0.2g anhydrous sodium carbonate, gbazee ya na 1000ml mmiri, jiri nwayọọ sie ya 10min, jụụ ya, tinye mmiri na 1000ml mgbe ọ gachara, iyo. izu, na calibrate ya itinye uche.
Nhazi: tụọ 0.18g nke ntụaka potassium dichromate akpọnwụwo na 1200C ka ịdị arọ mgbe niile.Tulee nke ọma.Tinye ya na flask ihe eji atụ iodine, gbazee na mmiri 25ml, tinye 2g potassium iodide na 20ml nke dilute sulfuric acid (20%), maa jijiji nke ọma, tinye ya n'ebe gbara ọchịchịrị maka 10min, tinye 150ml mmiri, titrate ya. na ngwọta Na2S2O3 dị njikere [c (Na2S2O3) ＝ 0.1 mol / L], tinye 2ml nke starch egosi ngwọta (10g / L) na njedebe njedebe, na-aga n'ihu ruo mgbe ngwọta gbanwere site na-acha anụnụ anụnụ gaa na-egbuke egbuke, na-eduzi ule efu na otu oge.Kwa 1ml nke Na2S2O3 (0.1 mol/L) bụ 4.9031mg nke potassium dichromate.A na-agbakọ mkpokọta nke ngwọta a dabere na oriri nke ngwọta a na ọnụọgụ potassium dichromate weere.
f.C (Na2S2O3) ＝ 0.01 mol/L: gbanye 0.1 mol/L Na2S2O3 na mmiri esichara ọhụrụ ma dị mma tupu i guzoro ugboro iri.
Oge nzipu: Ọkt-04-2022
