txo qis nce ntxiv nrog kev nce siab ntawm hydrocarbon. Qhov kub thiab txias nce viscosity txo los ntawm hydrocarbon. Qhov hnyav dua molecular ntawm hydrocarbon txo qis viscosity txo.
YPob hydrocarbons muaj viscosity siab?
Ntau qhov ua tau zoo, cov saw hlau ntev hydrocarbon zoo li squalene (C 30H 62) muaj viscosity qhov kev txiav txim loj dua li qhov luv n-alkanes (kwv yees li 31 mPa·s ntawm 25 ° C). Qhov no kuj yog vim li cas cov roj zoo li cov kua nplaum, vim lawv feem ntau yog tsim los ntawm cov saw ntev hydrocarbons.
Qhov luaj li cas ntawm hydrocarbon molecule cuam tshuam nws cov viscosity li cas?
Ib feem yog ib pawg ntawm hydrocarbons tag nrho nrog cov ntsiab lus kub hauv ib qho tshwj xeeb. … Thaum koj nce mus rau sab fractionating, cov hydrocarbon molecules tau me me thiab muaj: qis dua cov ntsiab lus kub . lower viscosity (lawv ntws yooj yim dua)
Dab tsi ua rau hydrocarbon viscous?
Viscosity yog tswj hwm los ntawm lub zog ntawm cov rog sib xyaws thiab tshwj xeeb tshaj yog los ntawm cov duab ntawm cov molecules ntawm cov kua. Cov kua uas nws cov molecules yog polar lossis tuaj yeem tsim cov ntawv cog lus hydrogen feem ntau yog nkig ntau dua li cov khoom tsis muaj polar zoo sib xws.
Yuav ua li cas hydrocarbons ntau dua?
Thaum ib qho hydrocarbon tsis txaus, nws muaj qee qhov sib txuas ob. Cov no yog hu ua alkenes. Qhov luv luv ntawm cov saw, qhov ntau ntws nws yog (tsawg viscous). Qhov luvcov saw, qhov txo qhov kub thiab txias cov ntsiab lus.
