Sirinjin da za a iya zubarwa - Shafi 1
Shiri na ethylene oxide saura bayani
0.1mol/L hydrochloric acid: tsarma 9ml hydrochloric acid zuwa 1000ml.
Maganin lokaci na 0.5%: auna 0.5g na periodate kuma tsarma zuwa 100ml.
Maganin sodium thiosulfate: auna 1g na sodium thiosulfate kuma tsarma zuwa 100ml.
10% sodium sulfite bayani: auna 10.0g anhydrous sodium sulfite, narkar da shi da kuma tsoma shi zuwa 100ml.
Maganin gwajin Magenta sulfurous acid: auna 0.1g na fuchsin na asali kuma ƙara 120ml na ruwan zafi don narkar da shi.Bayan sanyaya, ƙara 20ml na 10% sodium sulfite bayani da 2ml na hydrochloric acid a cikin duhu.Maganin gwajin ya kamata ya zama mara launi.Idan aka samu jajayensa ne, sai a sake shirya shi.
Ethylene glycol daidaitaccen bayani: Ɗauki busasshen waje kuma mai tsabta 50ml volumetric flask, ƙara game da 30ml na ruwa, auna shi daidai, ɗauki 0.5ml ethylene glycol, da sauri ƙara shi a cikin kwalban, girgiza shi, auna shi, bambanci tsakanin ma'auni biyu shine nauyin da ke cikin maganin, a zuba ruwa a cikin ma'auni, a haɗa shi, sannan a lissafta ma'auni kamar haka:
C W/50 × dubu daya
C: Glycol daidaitaccen bayani na maganin ƙwayar cuta g / l;
W: Nauyin ethylene glycol a cikin maganin g
Ethylene glycol misali bayani: daidai 1.0ml na daidaitaccen bayani na hannun jari, kuma a tsoma shi zuwa 1000ml da ruwa.
Shiri na sauƙi oxidized reagent:
a.Tsarma sulfuric acid (20%): Ɗauki H2SO4128ml, a yi allurar 500mL a hankali, kuma a tsoma zuwa 1000ml bayan sanyaya.
b.Alamar sitaci: Ɗauki 0.5g na sitaci mai narkewa, a narkar da shi a cikin 100ml na ruwa, zafi da tafasa, sa'an nan kuma kwantar da shi don jiran aiki (za a shirya shi idan an yi amfani da shi na ɗan lokaci)
c.Maganin Potassium permanganate: a sami 3.3gKMnO4, a zuba 1050ml na ruwa, a tafasa 15minti, a zuba ruwa zuwa 1050ml, a bar shi ya tsaya fiye da kwana biyu bayan an rufe shi, a tace shi da mazugi na gilashin microporous, girgiza shi, sannan a daidaita hankalinsa.
Calibration: Ɗauki 0.25g na ma'anar sodium oxalate da aka bushe zuwa nauyi akai-akai a 1050C, auna shi daidai, ƙara 100ml na maganin sulfuric acid (8+92) sannan a motsa don narkar da shi.Da sauri ƙara 25ml na daidaitaccen bayani na KMnO4 don a daidaita shi cikin maganin daga buret.Bayan bushewa, zafi shi zuwa 650C kuma ci gaba da titrating har sai maganin ya juya ja kuma ya kasance ba canzawa har tsawon 30s.A ƙarshen titration, zafin maganin maganin ba zai zama ƙasa da 550C ba, kuma za a gudanar da gwajin mara amfani a lokaci guda.Kowane 6.7mg na sodium oxalate yayi daidai da 1ml na 0.02mol/L KMnO4 daidaitaccen bayani.Ana ƙididdige ainihin ƙaddamar da wannan bayani bisa ga amfani da wannan maganin da adadin sodium oxalate da aka ɗauka.
d.C (KMnO4) = 0.002 mol/L: Ɗauki 0.02 mol/L KMnO4 kuma ƙara ruwa don tsoma shi sau 10 kafin amfani.
e.Sodium thiosulfate (0.1 mol/L): auna nauyi 26g Na2S2O3.5H2O ko 16g anhydrous Na2S2O3 a zuba 0.2g anhydrous sodium carbonate sai a narke a cikin ruwa 1000ml a hankali a tafasa 10min sai a huce a zuba ruwa bayan 1000ml sai a tace makonni, kuma calibrate ta maida hankali.
Calibration: auna 0.18g na tunani potassium dichromate bushe a 1200C zuwa kullum nauyi.Yi nauyi daidai.Sai a zuba a cikin flask mai auna ma'aunin aidin, sai a narkar da shi a cikin ruwa 25ml, sai a zuba 2g na potassium iodide da 20 ml na sulfuric acid (20%), sai a girgiza sosai, sai a zuba a wuri mai duhu na tsawon 10min, sai a zuba 150ml na ruwa, a daka shi. tare da shirin Na2S2O3 bayani [c (Na2S2O3) ＝ 0.1 mol/L], ƙara 2ml na sitaci bayani bayani (10g/L) a karshen batu, ci gaba da titrating har sai da bayani ya canza daga blue zuwa haske kore, da kuma gudanar blank gwajin a lokaci guda.Kowane 1ml na Na2S2O3 (0.1 mol/L) yayi daidai da 4.9031mg na potassium dichromate.Ana ƙididdige yawan adadin wannan maganin gwargwadon amfani da wannan maganin da adadin potassium dichromate da aka ɗauka.
f.C (Na2S2O3) 0.01 mol/L: tsarma 0.1 mol/L Na2S2O3 tare da sabon ruwan dafaffe da sanyaya kafin tsayawa da sau 10.
Lokacin aikawa: Oktoba-04-2022
