I-Factory Liquid Glacial Acetic Acid engu-99.9% ekunikezelweni ngobuningi
Sinemishini yesimanje. Imikhiqizo yethu ithunyelwa kwamanye amazwe e-USA, e-UK njalonjalo, ijabulela isimo esihle phakathi kwamakhasimende se-Factory Liquid Glacial Acetic Acid engu-99.9% ngobuningi, Sizokwenza konke okusemandleni ethu ukuhlangabezana noma ukudlula izidingo zamakhasimende ngezixazululo zekhwalithi ephezulu, umqondo othuthukisiwe, kanye nomhlinzeki osebenza kahle futhi ofika ngesikhathi. Siyakwamukela bonke abathengi.
Sinemishini yesimanje. Imikhiqizo yethu ithunyelwa kwamanye amazwe e-USA, e-UK njalonjalo, ijabulela isimo esihle phakathi kwamakhasimende ukuze , Ukuthengisa izixazululo zethu akubangeli zingozi futhi kuletha imbuyiselo ephezulu enkampanini yakho esikhundleni salokho. Kungumsebenzi wethu oqhubekayo ukudala inani kumakhasimende. Inkampani yethu ifuna ama-ejenti ngobuqotho. Ulindeni? Woza uzojoyina nathi. Manje noma ungasoze wakwenza.
Okuqukethwe kwe-Liquid Glacial Acetic Acid
Isimiso: I-Neutralization titration ngesisombululo esijwayelekile se-sodium hydroxide kusetshenziswa i-phenolphthalein njengenkomba. Okuqukethwe kwe-formic acid kuyasuswa ekubalweni.
Ama-reagent kanye nezixazululo:
Isixazululo esijwayelekile se-sodium hydroxide: c(NaOH) = 1 mol/L.
Inkomba ye-Phenolphthalein: Isixazululo se-ethanol esingu-5 g/L. Ncibilikisa i-phenolphthalein engu-0.5 g ku-100 ml ye-ethanol engu-95% (V/V) bese uyinciphisa ngesisombululo se-sodium hydroxide esingu-4 g/L kuze kuvele umbala opinki ongabonakali.
Ithuluzi: Ibhodlela elinesisindo esiyindilinga (umthamo ongu-3 ml); i-alkaline burette (umthamo ongu-50 ml). I-Liquid Glacial Acetic Acid.
Inqubo: Kala cishe amagremu angu-2.5 esampula ebhodleleni elinesisindo esiyindilinga, elilingana no-0.0001 g. Faka ibhodlela ebhodleleni elinesisindo esiyindilinga elingu-250 ml eliqukethe amanzi acwengekile angenayo i-carbon dioxide angu-50 ml. Vula isivalo sebhodlela, engeza u-0.5 ml we-phenolphthalein indicator, bese utitrate ngesisombululo esijwayelekile se-sodium hydroxide kuze kube yilapho umbala opinki ongabonakali uqhubeka imizuzwana emi-5.
