Qhov sib txawv tseem ceeb ntawm benzoic acid thiab ethyl benzoate yog tias benzoic acid muaj lub nplhaib benzene txuas rau pawg carboxylic acid, whereas ethyl benzoate muaj lub nplhaib benzene txuas rau pawg ester.
Benzoic acid yog ib qho uas muaj ntxhiab carboxylic acid whereas ethyl benzoate yog ib qho tshuaj tsw qab ester. Txij li cov no yog cov tshuaj tsw qab, ob lub tebchaw no muaj qhov tsw qab thiab qab ntxiag.
Y Benzoic Acid yog dab tsi?
Benzoic acid yog carboxylic acid nrog cov tshuaj formula C7H6O2 Nws yog qhov yooj yim tshaj plaws aromatic carboxylic acid, thiab nws tshwm sim raws li ib tug tsis muaj kob crystalline khoom. Tsis tas li ntawd, qhov sib xyaw no tshwm sim hauv ntau cov nroj tsuag vim tias nws ua haujlwm nruab nrab hauv kev tsim cov metabolites theem nrab.
Daim duab 01: Cov Qauv Tshuaj ntawm Benzoic Acid
Ntxiv mus, molar mass yog 122.12 g / mol. Nws muaj qhov tsw qab ntxiag. Nws melting point yog 122 ° C, thaum lub boiling point yog 250 ° C. Rau kev xav tau kev lag luam, peb tuaj yeem tsim cov khoom no los ntawm ib nrab oxidation ntawm toluene nyob rau hauv lub xub ntiag ntawm oxygen. Tsis tas li ntawd, lub npe ntawm cov tshuaj no los ntawm nws cov qauv, uas muaj ib lub nplhaib benzene nrog ib pawg carboxylic acid txuas.
Thaum xav txog kev siv cov tshuaj benzoic acid, nws yog ib qho tseem ceeb hauv kev tsim cov phenol, ua tus thawj coj rau kev tsim cov yas yas, ua ntej rau kev tsim cov sodium benzoate, uas yog cov khoom noj muaj txiaj ntsig, thiab lwm yam.
YEthyl Benzoate yog dab tsi?
Ethyl benzoate yog ib qho tshuaj tsw qab ester nrog cov tshuaj formula C9H10O2 Lub compound yog tsim los ntawm condensation ntawm benzoic acid thiab ethanol. Nws tshwm sim raws li cov kua uas tsis muaj xim uas muaj ntxhiab tsw qab, wintergreen. Molar mass yog 150.177 g / mol. Nws melting point yog -34 ° C thaum lub boiling point ntawm 211 mus rau 213 ° C.
Daim duab 02: Kev Npaj ntawm Ethyl Benzoate
Tsis tas li ntawd, cov tshuaj no yuav luag insoluble hauv dej tab sis dissolves hauv cov kuab tshuaj organic. Vim nws cov ntxhiab tsw qab, qhov sib xyaw no yog siv los ua ib feem ntawm cov tshuaj tsw qab thiab ua cov txiv hmab txiv ntoo zoo nkauj. Feem ntau txoj kev npaj ntawm ethyl benzoate yog acidic esterification ntawm benzoic acid nrog ethanol nyob rau hauv lub xub ntiag ntawm sulfuric acid raws li catalyst.
Qhov txawv ntawm Benzoic Acid thiab Ethyl Benzoate yog dab tsi?
Benzoic acid yog carboxylic acid nrog cov tshuaj formula C7H6O2 thaum ethyl benzoate yog ib qho tshuaj tsw qab ester nrog cov tshuaj formula C9H10O2 Qhov sib txawv tseem ceeb ntawm benzoic acid thiab ethyl benzoate yog tias benzoic acid muaj ib lub nplhaib benzene txuas rau pawg carboxylic acid, whereas ethyl benzoate muaj ib lub nplhaib benzene txuas nrog ester pawg.
Ntxiv mus, peb tuaj yeem txheeb xyuas qhov sib txawv ntawm benzoic acid thiab ethyl benzoate raws li lawv lub cev lub cev. Cov benzoic acid tshwm sim raws li cov xim tsis muaj xim crystalline, thaum ethyl benzoate tshwm sim raws li cov kua tsis muaj xim. Tsis tas li ntawd, thaum xav txog cov ntxhiab tsw ntawm cov tebchaw, benzoic acid muaj cov ntxhiab tsw qab thiab qab ntxiag thaum ethyl benzoate muaj ntxhiab tsw qab, wintergreen. Tsis tas li ntawd, benzoic acid yog dej-soluble tsis zoo, tab sis ethyl benzoate yuav luag insoluble hauv dej, thiab nws yog soluble nyob rau hauv feem ntau cov organic solvents.
Summary – Benzoic Acid vs Ethyl Benzoate
Benzoic acid yog carboxylic acid uas muaj cov tshuaj formula C7H6O2thaum Ethyl benzoate yog cov tshuaj tsw qab uas muaj cov tshuaj formula C9H10O2 Tshaj tag nrho, qhov sib txawv tseem ceeb ntawm benzoic acid thiab ethyl benzoate yog tias benzoic acid muaj lub nplhaib benzene txuas nrog pawg carboxylic acid, qhov ethyl benzoate muaj lub nplhaib benzene txuas nrog ester pawg..
