Cov kuab tshuaj feem ntau categorized li polar lossis nonpolar, ib qho ntawm cov kuab tshuaj tus qauv thiab nqi uas txiav txim siab hom tshuaj uas nws tuaj yeem yaj. Polar cov kuab tshuaj muaj qhov "zoo" thiab "tsis zoo" nqi ntawm ntau qhov chaw hauv lawv cov qauv thiab yuav yaj lwm cov tshuaj polar.
Puas yog cov kuab tshuaj ntau tshaj polar?
Feem ntau, qhov dielectric qhov tas li ntawm cov kuab tshuaj muab ib qho kev ntsuas ntxhib ntawm cov kuab tshuaj polarity. Lub zog polarity ntawm dejyog qhia los ntawm nws qhov siab dielectric tas li ntawm 88 (ntawm 0 ° C). Cov kuab tshuaj nrog lub dielectric tas li ntawm tsawg dua 15 feem ntau suav tias yog nonpolar.
Dab tsi ua rau qhov hnyav polar?
Polar cov kuab tshuaj muaj lub sijhawm loj dipole (aka "cov nqi ib nrab"); lawv muaj cov ntawv cog lus ntawm atoms nrog cov electronegativities sib txawv, xws li oxygen thiab hydrogenCov kuab tshuaj tsis muaj polar muaj cov ntawv cog lus ntawm cov atoms nrog cov electronegativities zoo sib xws, xws li carbon thiab hydrogen (xav tias hydrocarbons, xws li roj av).
Puas yog polar molecules solvents?
A polar molecule nrog ib nrab-zoo thiab tsis zoo nqi, nws npau yaj ions thiab polar molecules. Cov dej yog li ntawd hu ua cov kuab tshuaj: ib yam khoom muaj peev xwm ntawm dissolving lwm polar molecules thiab ionic compounds.
Dab tsi yog qhov txawv ntawm qhov tsis muaj polar thiab polar solvents?
Qhov sib txawv tseem ceeb ntawm polar thiab nonpolar cov kuab tshuaj yog qhov polar solvents dissolve polar compounds, whereas nonpolar solvents dissolve nonpolar compounds. Yog li, nws ua rau ib nrab nqi zoo thiab ib nrab nqi tsis zoo hauv tib qho chaw. …
