Ntawm twg ntawm cov hauv qab no yuav ua haujlwm kharasch?

Cov txheej txheem:

Ntawm twg ntawm cov hauv qab no yuav ua haujlwm kharasch?
Ntawm twg ntawm cov hauv qab no yuav ua haujlwm kharasch?
Anonim

Nco ntsoov, cov nyhuv Kharasch feem ntau tshwm sim nrog HBr thiab tsis sib haum xeeb alkenes thiab alkynes. Yog li, qhov kev xaiv raug yog (B). Cov ntaub ntawv ntxiv: Alkenes muaj nyob rau hauv pab pawg ntawm unsaturated hydrocarbons piv txwv li ib molecule ntawm alkene muaj tsawg kawg yog ib daim ntawv cog lus ob.

Peroxide nyhuv chav kawm 11 yog dab tsi?

Los ntawm lo lus peroxide nyhuv, peb tsuas txhais tau tias qhov sib ntxiv ntawm hydrogen bromide i.e. HBr rau cov alkenes tsis sib haum xeeb tawm tsam Markownikoff txoj cai. … Txij li thaum, qhov tshuaj tiv thaiv no tsuas yog nyob rau hauv lub xub ntiag ntawm peroxide, cov tshuaj tiv thaiv no hu ua cov nyhuv peroxide.

Karasch effect txhais li cas?

Kharasch nyhuv yog ntxiv ntawm HBr rau unsymmetrical alkenes nyob rau hauv lub xub ntiag ntawm Peroxide. Nws muab cov khoom tsis sib xws rau qhov Markovnikov ntxiv yuav muab. Cov tshuaj tiv thaiv tau tshwm sim los ntawm cov txheej txheem dawb radical.

Qhov twg ntawm cov reagent hauv qab no siv rau hauv cov nyhuv Kharasch?

Qhov sib ntxiv ntawm HBr (tab sis tsis yog ntawm HCl lossis HI)rau cov alkenes tsis sib xws nyob rau hauv muaj cov peroxides xws li benzoyl peroxide tshwm sim tawm tsam Markovnikov txoj cai. Cov nyhuv no hu ua Kharasch effect.

Dab tsi yog kev tawm tsam Markovnikov txoj cai?

Anti Markovnikov txoj cai piav qhia tias ntxiv rau cov tshuaj tiv thaiv alkenes lossis alkynes, cov proton tau ntxiv rau cov pa roj carbon atom uas muaj tsawg kawg ntawm hydrogen.atoms txuas rau nws. Txoj cai Anti Markovnikov ua haujlwm tawm tsam Markovnikov txoj cai thiab hu ua peroxide effect lossis Kharasch effect.

Pom zoo:

Cov khoom xyaw twg hauv qab no ua cov tshuaj tsw qab hauv cov tshuaj txhuam hniav?

Cov khoom xyaw twg hauv qab no ua cov tshuaj tsw qab hauv cov tshuaj txhuam hniav?

Sodium lauryl sulfate (SLS) yog surfactant feem ntau siv. YPuas yog tshuaj txhuam hniav puas yog surfactant? Surfactants. Ntau, txawm tias tsis yog tag nrho, tshuaj txhuam hniav muaj sodium lauryl sulfate (SLS) lossis lwm yam surfactants (detergents).

Ntawm qhov twg ntawm cov ces kaum hauv qab no yog cov haujlwm cosecant tsis tau txhais?

Ntawm qhov twg ntawm cov ces kaum hauv qab no yog cov haujlwm cosecant tsis tau txhais?

Qhov tseeb, tus nqi xa rov qab los ntawm kev ua haujlwm cosecant rau lub kaum sab xis ntawm xoom degrees lossis ib puas yim caum degrees yog suav tias yog tsis tau txhais, txij li qhov sib npaug csc (θ)= 1 / sin θ ) yuav suav nrog kev faib los ntawm xoom.

Qhov twg hauv qab no txiav txim siab txog cov luag haujlwm ntawm cov neeg muag khoom / tus nqi qis thiab cov neeg yuav khoom / tus neeg xauj tsev?

Qhov twg hauv qab no txiav txim siab txog cov luag haujlwm ntawm cov neeg muag khoom / tus nqi qis thiab cov neeg yuav khoom / tus neeg xauj tsev?

Cov luag haujlwm ntawm cov neeg muag khoom / tus neeg xauj tsev thiab cov neeg yuav khoom / tus neeg xauj tsev yog txiav txim siab los ntawm (1) nqe lus uas ob tog tau teev tseg hauv kev cog lus, (2) kev cai, thiab (3) cov cai teev tseg los ntawm Uniform Commercial Code (UCC).

Qhov twg ntawm cov haujlwm hauv qab no yog qhov ua haujlwm tsis muaj ntaub ntawv?

Qhov twg ntawm cov haujlwm hauv qab no yog qhov ua haujlwm tsis muaj ntaub ntawv?

printf thiab scanf yog cov piv txwv rau formatted input thiab output functions thiab getch, getche, getchar, gets, puts, putchar thiab lwm yam yog cov piv txwv ntawm unformatted input output functions. Tus qauv input-output header ntaub ntawv, npe hu ua stdio.

Ntawm twg ntawm cov ces kaum hauv qab no yog cov haujlwm secant tsis tau txhais?

Ntawm twg ntawm cov ces kaum hauv qab no yog cov haujlwm secant tsis tau txhais?

Qhov tseeb, tus nqi xa rov qab los ntawm kev ua haujlwm secant rau ib lub kaum sab xis ntawm cuaj caum degrees lossis ob puas thiab xya caum degrees yog suav tias yog tsis tau txhais, txij li qhov sib npaug sec (θ)= 1 / cos θ ) yuav suav nrog kev faib los ntawm xoom.