Lub chaw hydrogen hauv pawg carboxyl (−COOH) hauv carboxylic acids xws li acetic acid tuaj yeem cais tawm ntawm cov molecule los ntawm ionization: CH3COOH ⇌ CH 3CO2- + H. Vim yog qhov tso tawm ntawm proton (H+), acetic acid muaj acidic cim Acetic acid yog ib qho tsis muaj zog monoprotic acid.
Puas yog acetic acid acidic lossis yooj yim?
Acetic acid ua vinegar mildly acidic, nrog pH ntawm 2–3. Cov neeg ua raws li kev noj zaub mov alkaline feem ntau txhawj xeeb txog cov zaub mov cuam tshuam rau lawv lub cev pH. Tias yog vim li cas ntau tus neeg txhawb nqa siv cov zis pH kuaj strips los ntsuas lawv qib pH. Zoo li feem ntau cov zaub mov acidic, kev tshawb fawb qhia tias vinegar ua rau koj cov zis ntau acidic (3).
Vim li cas acetic acid acidic nyob rau hauv qhov?
Thaum yaj hauv dej, acetic acid nkag mus rau kev sib cais los ua hydrogen (H+) ion. Vim tias tso cov proton, acetic acid muaj cov kua qaub. Nws hloov xiav litmus daim ntawv liab, qhia tias nws yog acidic nyob rau hauv xwm.
Dab tsi ua rau acetic acid?
Feem ntau cov acetic acid yog tsim los ntawm methanol carbonylation, qhov twg methanol thiab carbon monoxide react los tsim acetic acid. Lub compound yog miscible nrog ethanol, ethyl ether, acetone, thiab benzene, thiab yog soluble nyob rau hauv carbon tetrachloride thiab carbon disulfide.
YPuas yog acetic acid?
Acetic acid tseem hu ua ethanoic acid, ethylic acid, vinegar acid, thiab methane carboxylic acid; nws muaj cov tshuaj formula ntawm CH3COOH. Acetic acid yog ib qho khoom ntawm fermentation, thiab muab vinegar nws tus yam ntxwv tsw. Vinegar yog li ntawm 4-6% acetic acid hauv dej.
