Imiti ikoreshwa - Umugereka 1
Gutegura igisubizo cya Ethylene oxyde
0.1mol / L hydrochloric aside: kuvanga 9ml hydrochloric aside kugeza 1000ml.
0.5% igisubizo cyigihe: upima 0.5g yigihe kandi uyungurura 100ml.
Sodium thiosulfate igisubizo: ipima 1g ya sodium thiosulfate hanyuma ukayungurura 100ml.
10% sodium sulfite igisubizo: ipima 10. 0g anhydrous sodium sulfite, kuyishonga no kuyungurura kugeza 100ml.
Magenta sulfurous acide igisubizo: ipima 0.1g ya fuchsine yibanze hanyuma ongeramo 120ml y'amazi ashyushye kugirango uyashonge.Nyuma yo gukonjesha, ongeramo 20ml ya 10% sodium sulfite yumuti na 2ml ya aside hydrochloric mwijimye.Igisubizo cyikizamini kigomba kuba kitagira ibara.Niba bigaragaye ko ari umutuku, bigomba kongera gutegurwa.
Ethylene glycol isanzwe yibisubizo: fata flask yumye yumye kandi isukuye 50ml, wongereho amazi ya 30ml, uyapime neza, fata 0.5ml Ethylene glycol, uyongere vuba mumacupa, uyinyeganyeze, upime, itandukaniro riri hagati ya uburemere bubiri nuburemere bukubiye mubisubizo, ongeramo amazi mubipimo, ubivange, kandi ubare ubunini bwabyo ukurikije formula ikurikira:
C ＝ W / 50 × igihumbi
C: Glycol isanzwe yibisubizo byibisubizo g / l;
W: Uburemere bwa Ethylene glycol mugisubizo g
Ethylene glycol igisubizo gisanzwe: fata neza 1.0ml yumuti usanzwe, hanyuma ushire kuri 1000ml namazi.
Gutegura byoroshye okiside reagent:
a.Koresha aside sulfurike (20%): Fata H2SO4128ml, utere buhoro buhoro 500mL, hanyuma ushire kuri 1000mL nyuma yo gukonja.
b.Ikimenyetso cya krahisi: fata 0.5g ya krahisi ishonga, uyishongeshe muri 100ml y'amazi, ushushe hanyuma ubiteke, hanyuma ubikonje kugirango uhagarare (bizategurwa bishya iyo bikoreshejwe by'agateganyo)
c.Potasiyumu permanganate yumuti: fata 3.3gKMnO4, ongeramo 1050ml yamazi, uteke kuri 15min, ongeramo amazi kuri 1050ml, ubireke uhagarare muminsi irenga ibiri nyuma yo gufunga, kuyungurura hamwe na feri ya microporogi, kuyinyeganyeza, no guhuza ibitekerezo byayo.
Calibration: Fata 0,25g ya sodium oxyde yumye yumye kugeza kuri 1050C, uyipime neza, ongeramo 100ml yumuti wa acide sulfurike (8 + 92) hanyuma ukangure kuyishonga.Ongeraho vuba 25ml ya KMnO4 igisubizo gisanzwe kugirango uhindurwe mubisubizo bivuye kuri buret.Nyuma yo kuzimya, shyushya kuri 650C hanyuma ukomeze gutanga titre kugeza igisubizo gihindutse umutuku kandi ntigihinduka kuri 30.Ku iherezo rya titre, ubushyuhe bwigisubizo ntibugomba kuba munsi ya 550C, kandi ikizamini cyubusa kizakorerwa icyarimwe.Buri 6.7mg ya sodium oxyde ihwanye na 1ml ya 0.02mol / L KMnO4 igisubizo gisanzwe.Ubwinshi bwibanze bwiki gisubizo kibarwa ukurikije ikoreshwa ryiki gisubizo nubunini bwa sodium oxyde yafashwe.
d.C (KMnO4) = 0.002 mol / L: Fata 0,02 mol / L KMnO4 hanyuma ushyiremo amazi kugirango uyunguruze inshuro 10 mbere yo kuyakoresha
e.Sodium thiosulfate (0.1 mol / L): ipima 26g Na2S2O3.5H2O cyangwa 16g anhydrous Na2S2O3, ongeramo 0.2g anhydrous sodium karubone, uyishongeshe mumazi 1000ml, uyiteke buhoro buhoro 10min, uyikonje, wongere amazi kuri 1000ml, uyungurure nyuma ya kabiri ibyumweru, kandi uhindure ibitekerezo byayo.
Calibration: ipima 0.18g ya potasiyumu dichromate yumye kuri 1200C kugirango uburemere burigihe.Gupima neza.Shyira muri iyode ipima flask, uyishongeshe muri 25ml y'amazi, ongeramo 2g ya iyode ya potasiyumu na 20ml ya acide sulfurike (20%), uzunguze neza, uyishyire ahantu hijimye kuminota 10, ongeramo 150ml y'amazi, uyitangeho titre hamwe nigisubizo cyateguwe Na2S2O3 [c (Na2S2O3) ＝ 0.1 mol / L], ongeramo 2ml yumuti wibipimo byerekana (10g / L) kumpera yanyuma, komeza utange titre kugeza igisubizo gihindutse kiva mubururu nicyatsi kibisi, kandi ukore ikizamini cyubusa kuri icyarimwe.Buri 1ml ya Na2S2O3 (0.1 mol / L) ihwanye na 4.9031mg ya potasiyumu dichromate.Ubwinshi bwiki gisubizo kibarwa ukurikije ikoreshwa ryiki gisubizo nubunini bwa potasiyumu dichromate yafashwe.
f.C (Na2S2O3) ＝ 0.01 mol / L: shyira 0.1 mol / L Na2S2O3 n'amazi mashya yatetse kandi akonje mbere yo guhagarara inshuro 10.
Igihe cyo kohereza: Ukwakira-04-2022
