Qhov sib txawv tseem ceeb ntawm benzoic acid thiab benzaldehyde yog tias benzoic acid muaj -COOH ua haujlwm pab pawg txuas nrog lub nplhaib benzene, whereas benzaldehyde muaj -CHO ua haujlwm pab pawg txuas nrog lub nplhaib benzene.
Ob leeg benzoic acid thiab benzaldehyde yog cov organic tebchaw. Lawv txawv ntawm ib leeg raws li cov khoom siv tshuaj, lub cev, siv, thiab lwm yam.
Y Benzoic Acid yog dab tsi?
Benzoic acid yog qhov yooj yim tshaj plaws aromatic carboxylic acid uas muaj cov mis molecular C6H5COOH. Cov molar loj ntawm benzoic acid yog hais txog 122.12 g / mol. Ib qho benzoic acid molecule yog tsim los ntawm ib lub nplhaib benzene hloov nrog ib pawg carboxylic acid (-COOH).
Nyob rau hauv chav tsev kub thiab siab, benzoic acid yog dawb crystalline khoom. Nws yog me ntsis soluble hauv dej. Benzoic acid muaj qhov tsw qab ntxiag. Lub melting point ntawm benzoic acid yog hais txog 122.41 ° C. Qhov kub ntawm benzoic acid yog 249.2 ° C, tab sis ntawm 370 ° C, nws decomposes.
Daim duab 01: Khoom Lub Xeev Pom Zoo ntawm Benzoic Acid
Benzoic acid tuaj yeem hloov pauv hluav taws xob uas muaj ntxhiab tsw qab vim yog cov khoom siv hluav taws xob rho tawm ntawm pawg carboxylic. Carboxylic acid tuaj yeem muab lub nplhaib aromatic nrog pi electrons. Tom qab ntawd nws yuav nplua nuj nyob rau hauv electrons. Yog li, electrophiles tuaj yeem hnov qab nrog lub nplhaib uas muaj ntxhiab.
Benzoic acid yog cov kab mob fungistatic uas tau siv dav los ua zaub mov noj. Qhov no txhais tau tias nws tuaj yeem tiv thaiv kev loj hlob ntawm fungi hauv cov zaub mov. Benzoic acid tuaj yeem pom muaj nyob hauv qee cov txiv hmab txiv ntoo, xws li berries.
Benzaldehyde yog dab tsi?
Benzaldehyde tuaj yeem txhais tau tias yog ib qho tshuaj tsw qab aldehyde uas muaj cov tshuaj formula C6H5CHO. Nws muaj ib pab pawg phenyl txuas nrog aldehyde ua haujlwm pab pawg. Ntxiv mus, nws yog qhov yooj yim tshaj plaws aromatic aldehyde. Nws tshwm sim raws li cov kua xim tsis muaj xim thiab muaj cov ntxhiab tsw zoo li almond. Nws molar mass yog 106.12 g / mol. Nws melting point yog -57.12 ° C, thaum nws boiling point yog 178.1 ° C.
Daim duab 02: Cov Tshuaj Synthesis ntawm Benzaldehyde
Thaum xav txog kev tsim cov benzaldehyde, txoj hauv kev tseem ceeb ntawm kev tsim khoom yog kua theem chlorination thiab oxidation ntawm toluene. Txawm li cas los xij, qhov sib xyaw no tshwm sim hauv ntau yam khoom noj thiab, piv txwv li, hauv almonds. Yog li ntawd, ib qho ntawm cov kev siv loj ntawm cov khoom siv no yog nws siv los ua ib qho almond tsw hauv cov khoom noj thiab cov khoom tsw qab.
Qhov txawv ntawm Benzoic Acid thiab Benzaldehyde yog dab tsi?
Benzoic acid thiab benzaldehyde yog cov organic tebchaw tseem ceeb rau ntau lub hom phiaj kev lag luam. Qhov sib txawv tseem ceeb ntawm benzoic acid thiab benzaldehyde yog tias benzoic acid muaj -COOH ua haujlwm pab pawg txuas nrog lub nplhaib benzene, thaum benzaldehyde muaj -CHO ua haujlwm pab pawg txuas nrog lub nplhaib benzene. Benzoic acid yog carboxylic acid compound, whereas benzaldehyde yog ib qho aldehyde compound.
Ntxiv mus, benzoic acid zoo nkaus li dawb crystalline khoom nrog rab koob zoo li siv lead ua, thaum benzaldehyde tshwm sim ua kua tsis muaj xim nrog cov ntxhiab ntawm almond. Tsis tas li ntawd, benzoic acid yog siv nyob rau hauv kev tsim cov naj hoom, dyes, tshuaj pleev ib ce, thiab tshuaj tua kab, thaum benzaldehyde yog siv rau tsw cov zaub mov nrog almond tsw, nyob rau hauv ib co cosmetic khoom thiab cov khoom tu tus kheej raws li ib tug muaj, nyob rau hauv dye manufacturing, xab npum manufacturing., tsw tswj, thiab lwm yam.
Cov hauv qab no qhia txog qhov sib txawv ntawm benzoic acid thiab benzaldehyde hauv daim ntawv tabular rau kev sib piv ntawm ib sab.
Summary – Benzoic Acid vs Benzaldehyde
Benzoic acid yog qhov yooj yim tshaj plaws aromatic carboxylic acid uas muaj cov mis molecular C6H5COOH, hos benzaldehyde yog ib qho aromatic aldehyde muaj cov chemical formula C6H5CHO. Qhov sib txawv tseem ceeb ntawm benzoic acid thiab benzaldehyde yog tias benzoic acid muaj -COOH pab pawg ua haujlwm txuas nrog lub nplhaib benzene, whereas benzaldehyde muaj -CHO ua haujlwm pab pawg txuas nrog lub nplhaib benzene.
