Kev kuaj iodoform ua haujlwm li cas?
Kev kuaj iodoform ua haujlwm li cas?

Video: Kev kuaj iodoform ua haujlwm li cas?

Video: Kev kuaj iodoform ua haujlwm li cas?
Video: 8 yam tsis txhob ua thaum sib deev tag tsis li yuav phom sij txog lub neej txoj sia. 2024, Kaum ib hlis
Anonim

Iodoform xeem yog siv los xyuas qhov muaj cov carbonyl compounds nrog cov qauv R-CO-CH3 lossis cawv nrog cov qauv R-CH(OH)-CH3 hauv cov khoom tsis paub. Cov tshuaj tiv thaiv ntawm iodine, lub hauv paus thiab methyl ketone muab cov xim daj daj nrog rau cov ntxhiab tsw "antiseptic".

Yog li ntawd, dab tsi ua rau muaj txiaj ntsig zoo hauv kev sim iodoform?

A qhov txiaj ntsig zoo - daj daj precipitate ntawm triiodomethane ( iodoform ua ) - yog muab los ntawm ib qho aldehyde lossis ketone uas muaj cov pab pawg: ntau ketones muab qhov no tshuaj tiv thaiv , tab sis cov uas ua txhua tus muaj ib pawg methyl ntawm ib sab ntawm carbon-oxygen ob daim ntawv cog lus. Cov no yog hu ua methyl ketones.

Tsis tas li ntawd, pab pawg ua haujlwm twg tuaj yeem kuaj pom nrog iodoform kuaj? aldehyde

Ua kom pom qhov no, cov cawv puas muab iodoform kuaj?

Ethanol tsuas yog thawj zaug cawv rau muab triiodomethane ( iodoform ua ) tshuaj tiv thaiv . Yog tias "R" yog pawg hydrocarbon, ces koj muaj qhov thib ob cawv . Muaj ntau theem nrab cawv muab qhov kev xav no, tab sis cov uas ua txhua tus muaj ib pab pawg methyl txuas nrog cov pa roj carbon nrog cov pab pawg -OH.

Puas yog acetone muab iodoform kuaj?

Tsuas yog aldehyde tuaj yeem dhau qhov no tshuaj tiv thaiv yog acetone vim nws tsuas yog aldehyde nrog methyl txuas rau alpha txoj hauj lwm ntawm carbonyl. Tsuas yog ib qho aldehyde thiab tsuas yog ib qho cawv cawv xwb muab ib tug zoo iodoform xeem.

Pom zoo: