Sinemitjhini yesimanjemanje. Imikhiqizo yethu ithunyelwa e-USA, e-UK nokunye, ithokozela ubujamo obuhle khulu hlangana namaklayenti we-Factory Liquid Glacial Acetic Acid 99.9% in Bulk Supply, Sizokwenza koke okusemandlenathu ukuhlangabezana nofana ukudlula iimfuneko zamakhasimende ngeensombululo ezisezingeni eliphezulu, umqondo othuthukileko, nomhlinzeki osebenzako nofike ngesikhathi. Siyakwamukela woke amathemba.
Sinemitjhini yesimanjemanje. Imikhiqizo yethu ithunyelwa e-USA, e-UK njalonjalo, ithokozela ubujamo obuhle khulu hlangana namaklayenti, ukuthengisa iinsombululo zethu akubangeli ubungozi begodu kuletha imbuyiselo ephezulu enkampanini yakho esikhundleni salokho. Mzabalazo wethu ongaguqukiko ukwenza inani lamakhasimende. Ikhamphani yethu ifuna ama-ejenti ngobuqotho. Ulindeleni? Woza uzokuhlanganyela nathi. Nje namkha ungasoze.














Okuqukethwe yi-Liquid Glacial Acetic Acid
Umthethomgomo: Ukulinganiswa kwe-neutralization ngesisombululo esijayelekileko se-sodium hydroxide kusetjenziswa i-phenolphthalein njengesibonisi. Okuqukethwe yi-formic acid kuyadonswa ekubaleni.
Ama-Reagents kanye nezisombululo:
Isisombululo esijayelekileko se-sodium hydroxide: c(NaOH) = 1 mol/L.
Inkomba ye-phenolphthalein: isisombululo se-ethanol esingu-5 g/L. Ncibilikisa i-0.5 g ye-phenolphthalein ku-100 ml ye-95% (V/V) ye-ethanol bese uyincibilikisa nge-4 g/L ye-sodium hydroxide solution bekube lapho kuvela umbala ophinki.
Iinsetjenziswa: Ibhodlela lokulinganisa elifana ne-conical (umthamo we-3 ml); i-alkaline burette (50 ml capacity). Liquid Glacial Acetic Acid.
Ikambiso: Kala isisindo esilinganiselwa ku-2.5 g sesampula ebhodleleni lokulinganisa eliyi-conical, eliqondileko ukuya ku-0.0001 g. Faka ibhodlela ngaphakathi kweflaski engu-250 ml ene-50 ml yamanzi ahlanjululweko angena-carbon dioxide. Vula isivalo sebhodlela, faka i-0.5 ml ye-phenolphthalein indicator, bese u-titrate ngesisombululo esijayelekileko se-sodium hydroxide bekube lapho umbala opinki omncani uhlala imizuzwana emi-5.