Ngokunamathela emthethweni wakho "wekhwalithi, isizo, ukusebenza nokukhula", nje sifumene ukuthenjwa nokunconywa ngamakhasimende wangekhaya nakwamanye amazwe nge-Factory Supplied Industrial Grade Glacial Acetic, Ikhwalithi ephezulu kanye namazinga wokuncintisana enza izinto zethu zithabe ngokuma okuphezulu kiyo yoke indawo.
Ngokunamathela emthethweni wakho "wekhwalithi, isizo, ukusebenza nokukhula", nje sifumene ukuthenjwa nokunconywa ngamakhasimende wangekhaya nakwamanye amazwe, Njengombana siyizisombululo eziphambili zefemu yethu, uchungechunge lwezisombululo zethu zihloliwe begodu zisinqobe isitifiketi segunya elinamava. Ukuthola amapharamitha angezelelweko nemininingwana yohlu lwezinto, qiniseka bona uchofoza ibhathini ukuthola ilwazi elengeziweko.














5. Iimhloliso:
1. I-Formic Acid:
i. Ikambiso: Kala isisindo esingaba ma-5 g wesampula (ngokusebenzisa ibhalansi yezobuchwepheshe) ngaphakathi kwebhiya eyi-100 ml. Faka amathonsi amabili wesisombululo se-phenolphthalein bese uyiqeda ngesisombululo se-2 N se-NaOH bekube lapho kuvela umbala obomvu. Hwamukela ngaphakathi kwebhadi yamanzi ibe yingcenye yevolumu yasekuthomeni. Pholisa, yenza i-esidi nge-5 ml ye-HCl ehlanganisiweko, bese uyidlulisela ngaphakathi kwe-250 ml ye-iodine equkethe i-50 ml yamanzi kanye ne-50 ml yesixazululo se-0.1 N se-NaBrO. Vala ngokuqinileko, hlanganisa kuhle, bese uvumela bona ime imizuzu ema-30. Faka i-15 ml yesixazululo se-16.5% se-KI, i-20 ml ye-6 N HCl, kanye ne-2 ml yesisombululo sesitashi. Titrate nge-0.1 N Na2S2O3 isisombululo bekube kulapho umbala ohlaza satjani unyamalala (iphuzu lokugcina). Yenza ukuhlolwa okungenalutho ngasikhathi sinye.
b. Ukubala: (Blank ml – Isampula ml) × 0.1 (Normality) × 0.02301 = amagremu we-HCOOH
c. Igreyidi ye-Glacial Acetic Qaphela: Ukutjhisa phezu kwebhadi yamanzi ngemva kokufaka i-NaOH kuhloswe ngakho ukuhwamuka nokususa i-acetaldehyde, okungabangela imiphumela ephezulu.Igreyidi ye-Glacial Acetic.
2. I-Acetaldehyde:
i. Ikambiso: Kala i-10 g ye-glacial acetic acid (ngokusebenzisa ibhalansi yezobuchwepheshe) nge-250 ml ye-iodine flask. Faka ama-50 ml wamanzi, bese ufaka i-10 ml yesixazululo se-4% se-NaHSO3 ngaphakathi kweflaski. Vala ngokuqinileko, uthintithe, bese uvumela bona ime imizuzu ema-30. Faka i-2 ml yesisombululo sesitatjhi bese uyitjhugulula ngesisombululo se-Iodine esingu-0.1 N bekube lapho kuvela umbala ohlaza satjani (indawo yokugcina). Yenza ukuhlolwa okungenalutho ngasikhathi sinye.
b. Ukubala: (Blank ml – Isampula ml) × 0.1 (Normality) × 0.02203 = amagremu we-CH3CHO
6. Ukulungiselela i-Reagent:
0.1 N Sodium Hypobromite (NaBrO) Isisombululo: Faka i-2.8 ml ye-bromine ku-500 ml yamanzi. Faka i-100 ml ye-2 N NaOH bese uvuselela bekube kulapho incibilika. Hlanganisa ngamanzi ukuya ku-1000 ml ukuthola isisombululo se-0.1 N se-NaBrO.
6. Ukulungiselela i-Glacial Acetic Reagent:
0.1 N Sodium Hypobromite (NaBrO) Isisombululo: Faka i-2.8 ml ye-bromine ku-500 ml yamanzi. Faka i-100 ml ye-2 N NaOH bese uvuselela bekube kulapho incibilika. Hlanganisa ngamanzi ukuya ku-1000 ml ukuthola isisombululo se-0.1 N se-NaBrO.