Qhov twg hauv qab no muaj qhov siab tshaj plaws laevorotatory?

Cov txheej txheem:

Qhov twg hauv qab no muaj qhov siab tshaj plaws laevorotatory?
Qhov twg hauv qab no muaj qhov siab tshaj plaws laevorotatory?

Video: Qhov twg hauv qab no muaj qhov siab tshaj plaws laevorotatory?

Video: Qhov twg hauv qab no muaj qhov siab tshaj plaws laevorotatory?
Video: 10 lub teb chaw muaj tub rog diam phom ntau tshaj hauv qab ntuj nov 2024, Hlis ntuj nqeg
Anonim

Plag: Thaum fructose tov muab tso rau hauv lub polariser nws tig lub dav hlau polarized lub teeb nyob rau hauv anti-clockwise kev taw qhia uas yog mus rau sab laug. Yog li, nws yog ib qho kev sib xyaw ua ke ntawm laevorotatory.

Qhov twg hauv qab no muaj kev sib hloov siab tshaj plaws?

D-(+) - glucose muaj ib qho kev sib hloov ntawm +52.5%, D-(-)- fructose muaj kev sib hloov ntawm -92.4% ∘ thaum lub sijhawm ntawd. invert qab zib muaj ib tug laevorotation ntawm -92.4 + 52.5=-39.9∘.

Leej twg yog Laevorotatory?

fructose yog laevorotatory. Nws tig lub dav hlau ntawm lub teeb polarized nyob rau hauv ib qho kev taw qhia anticlockwise.

Cov qab zib twg hauv qab no yog Laevorotatory?

Cov lus teb yog fructose.

Qhov twg hauv qab no hu ua levulose?

Fructose, tseem hu ua txiv hmab txiv ntoo qab zib, tsuas yog ib txwm tshwm sim ketohexose. Nws kuj tseem hu ua levulose vim tias nws muaj kev sib hloov kho qhov muag uas muaj zog levorotatory.

Pom zoo: