2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Ib tshuaj yog ib homogeneous sib tov ntawm ob los yog ntau tshaj tshuaj. Cov khoom uas muaj nyob rau hauv qhov loj tshaj plaws yog hu ua cov kuab tshuaj thiab ib qho tam sim no nyob rau hauv lub me me yog hu ua ib tug solute. Tsuas muaj ib qho kuab tshuaj xwb, tab sis muaj peev xwm ua tau ntau yam.
Yuav ua li cas thaum muaj cov kuab tshuaj ntau dua li cov kuab tshuaj?
Qhov concentration ntawm cov tshuaj tuaj yeem txo qis ntxiv, lossis diluted, los ntawm kev ntxiv cov kuab tshuaj ntxiv. Ntawm qhov tod tes, raws li cov ntsiab lus ntau ntxiv rau kev daws, cov tshuaj ua kom muaj zog ntau dua. … Yog hais tias ib qho tshuaj muaj cov kuab tshuaj tsawg dua li qhov siab tshaj plaws, nws yog ib qho tshuaj tsis txaus.
Yuav ua kom hnyav tsawg dua li cov kuab tshuaj?
A solute yog cov khoom muaj nyob rau hauv qhov me me hauv cov tshuaj. Cov kuab tshuaj yog cov khoom muaj nyob rau hauv qhov loj dua hauv cov tshuaj.
Qhov twg yog qhov hnyav dua thiab solute?
Ib lub ntsiab yog cov khoom uas yuav yaj (qab zib). Cov kuab tshuaj yog ib qho ua kom yaj (dej). Raws li txoj cai ntawm tus ntiv tes xoo, feem ntau muaj cov kuab tshuaj ntau dua li cov kuab tshuaj. Tus nqi ntawm cov kuab tshuaj uas tuaj yeem yaj los ntawm cov kuab tshuaj yog txhais tau tias yog solubility.
Puas muaj ob lub kuab tshuaj?
Yes and no. Yog tias cov khoom sib xyaw ua kua, cov khoom yog cov kua thiab cov kua yog cov kuab tshuaj. Yog tias koj muaj ntau tshaj ib yam kua tam sim no nrog rau cov kua dej, ces cov kua theem yoghu ua "sib tov hnyav," tsis yog ntau cov kuab tshuaj.
Pom zoo:
Puas dav dua log muaj tuav ntau dua?
Los ntawm qhov kev nyab xeeb ntawm qhov pom, ob hom muaj lawv sab zoo: Nyob ntawm txoj kev qhuav, cov log tsheb dav dua yuav muaj kev tuav ntau dua qhov nqaim, tab sis kev pheej hmoo ntawm aquaplaning yuav siab dua nrog cov log tsheb dav. - Thaum lub caij ntuj no, cov log tsheb nqaim tau zoo dua nyob rau hauv cov xwm txheej hnyav vim tias lawv muab qhov siab siab dua rau txoj kev.
Puas yog cov dej khov ntev ntev dua li cov dej khov nab kuab?
Lwm qhov sib txawv loj ntawm glacials thiab interglacials yog cov kev hloov hauv dej hiav txwv. Thaum lub sij hawm glacial, cov dej hiav txwv poob qhov nruab nrab ntawm 100m raws li cov dej evaporated thiab khaws cia rau hauv cov glaciers loj hlob thiab cov ntawv dej khov.
Puas cov kuab tshuaj muaj esters?
Esters yog tsim los ntawm condensation cov tshuaj tiv thaiv ntawm ib qho cawv thiab carboxylic acid. Kev siv tseem ceeb ntawm esters yog rau flavorings thiab perfumes, tab sis lawv kuj siv tau nyob rau hauv lub tshuaj lom neeg kev lag luam ua kuab tshuaj.
Cov piv txwv ntawm cov kuab tshuaj thiab cov kuab tshuaj yog dab tsi?
Solutes yog cov khoom uas yaj rau hauv cov kuab tshuaj thiab peb xaus nrog kev daws. Qee qhov piv txwv ntawm cov kuab tshuaj yog dej, ethanol, toluene, chloroform, acetone, mis nyuj, thiab lwm yam. Piv txwv ntawm cov kuab tshuaj muaj xws li, qab zib, ntsev, oxygen, thiab lwm yam … Cov dej dej muaj dej (kua kua) thiab yaj oxygen (solute).
Cov kuab tshuaj puas tshem tawm cov stains?
Kev tshem tawm kab yog txheej txheem ntawm kev tshem tawm cov cim lossis qhov chaw sab laug los ntawm ib qho khoom ntawm ib qho chaw xws li ntaub. A solvent lossis detergent feem ntau yog siv los tshem tawm cov stain thiab ntau yam no muaj nyob hauv lub txee.
