ʻO ka Waikawa Acetic Glacial Liquid Factory 99.9% ma ka lako nui
Loaʻa iā mākou nā lako hana hou loa. Hoʻokuʻu ʻia aku kā mākou huahana no ʻAmelika Hui Pū ʻIa, UK a pēlā aku, e hauʻoli ana i kahi kūlana kupaianaha ma waena o nā mea kūʻai aku no Factory Liquid Glacial Acetic Acid 99.9% ma ka Bulk Supply, E hana mākou i ka mea maikaʻi loa e hoʻokō a ʻoi aku paha i nā kikoʻī o nā mea kūʻai aku me nā hoʻonā kiʻekiʻe loa, ka manaʻo holomua, a me ka mea hoʻolako kūpono a me ka manawa kūpono. Hoʻokipa mākou i nā mea kūʻai aku a pau.
Loaʻa iā mākou nā lako hana hou loa. Hoʻokuʻu ʻia aku kā mākou huahana no ʻAmelika Hui Pū ʻIa, UK a pēlā aku, e hauʻoli ana i kahi kūlana kupaianaha i waena o nā mea kūʻai aku no , ʻO ke kūʻai aku ʻana i kā mākou mau hoʻonā ʻaʻole ia e hoʻopilikia a lawe mai i nā hoʻihoʻi kiʻekiʻe i kāu ʻoihana. ʻO kā mākou ʻimi mau ia e hoʻokumu i ka waiwai no nā mea kūʻai aku. Ke ʻimi nei kā mākou ʻoihana i nā ʻelele me ka ʻoiaʻiʻo. He aha kāu e kali nei? E hele mai e hui pū me mākou. I kēia manawa a ʻaʻole loa.
ʻO ka nui o ka waikawa ʻakika hau hau
Kumumanaʻo: Hoʻohuihui ʻana me ka hopena maʻamau o ka sodium hydroxide me ka hoʻohana ʻana i ka phenolphthalein ma ke ʻano he anakahi. Hoʻemi ʻia ka nui o ka waikawa formic i ka helu ʻana.
Nā Reagents a me nā Hoʻonā:
ʻO ka hopena maʻamau o ka sodium hydroxide: c(NaOH) = 1 mol/L.
Hōʻailona Phenolphthalein: 5 g/L hopena ethanol. E hoʻoheheʻe i ka 0.5 g phenolphthalein i loko o 100 ml o 95% (V/V) ethanol a hoʻopau me kahi hopena sodium hydroxide 4 g/L a hiki i ka ʻike ʻia ʻana o kahi kala poni palupalu.
Mea Hana: ʻŌmole kaupaona conical (hiki ke loaʻa he 3 ml); burette alkaline (hiki ke loaʻa he 50 ml). Waikawa Acetic Glacial Wai.
Kaʻina Hana: E kaupaona ma kahi o 2.5 g o ka hāpana i loko o kahi ʻōmole kaupaona conical, pololei i 0.0001 g. E kau i ka ʻōmole i loko o kahi ʻōmole conical 250 ml e loaʻa ana he 50 ml o ka wai i hoʻoheheʻe ʻia me ke kalapona ʻokikene ʻole. E wehe i ke poʻi o ka ʻōmole, e hoʻohui i 0.5 ml o ka hōʻailona phenolphthalein, a titrate me ka hopena maʻamau sodium hydroxide a hiki i ka wā e mau ai kahi kala poni palupalu no 5 kekona.
