2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Nyob rau theem molecular, ntsev yaj hauv dej vim hluav taws xobthiab vim qhov tseeb tias ob qho tib si dej thiab ntsev cov ntsiab lus yog polar, nrog rau qhov zoo thiab qhov tsis zoo ntawm sab nraud hauv molecule.
Yuav ua li cas kom ntsev kom yaj hauv dej sai dua?
Kub tuaj yeem pab qee cov tshuaj yaj sai dua hauv dej. Piv txwv li, ntsev yuav yaj sai dua hauv dej kub dua hauv dej txias.
Yog ntsev yaj hauv dej tshuaj los yog lub cev?
Piv txwv li ntsev yaj hauv dej feem ntau suav tias yog lub cev hloov pauv, txawm li cas los xij hom tshuaj hauv ntsev (hydrated sodium thiab chlorine ions) txawv ntawm hom hauv ntsev.
ntsev ntau npaum li cas tuaj yeem yaj hauv dej?
Thaum 20 °C ib liter dej tuaj yeem yaj txog 357 grams ntawm ntsev, qhov concentration ntawm 26.3% w / w. Thaum boiling (100 ° C) tus nqi uas yuav yaj nyob rau hauv ib liter dej nce mus txog 391 grams, ib tug concentration ntawm 28.1% w/w.
Yuav siv sijhawm ntev npaum li cas kom ntsev kom yaj hauv dej yam tsis tau nplawm?
Qhov kev ntsuas nruab nrab yog lub sijhawm siv rau cov qauv sodium chloride kom yaj ntawm 0 ° C yam tsis muaj kev nplawm, yog li qhov txiaj ntsig no tau qhia tias cov qauv sodium chloride yuav yaj ntawm 0 ° C yam tsis tau nplawm hauv 2457 s(40 min 57 s).
Pom zoo:
Nyob hauv cov ntsev ntsev?
Yog ntsev molecule khi rau cov dej molecules, nws yog ntsev ntsev. Hauv lwm lo lus, hydrated ntsev yog ntsev molecule uas yog lankly txuas rau qee yam dej molecules. Cov ntsev feem ntau yog cov muaju nyob rau hauv lub xeev hydrated, txhais tau hais tias ib qho kev faib ua feem ntawm cov dej yog txuas nrog cov qauv siv lead ua.
Puas yog kev yaj ntsev hauv dej puas hloov lub cev?
Piv txwv li ntsev yaj hauv dej feem ntau suav tias yog a lub cev hloov pauv, txawm li cas los xij cov hom tshuaj hauv ntsev (hydrated sodium thiab chlorine ions) txawv ntawm hom hauv ntsev. Vim li cas cov ntsev yaj hauv dej hloov tshuaj?
Ntsev puas yuav tua cov cag hauv cov kav dej?
Txawm hais tias pob zeb ntsev tiag tiag yuav tua cov cag ntoo ntawm kev sib cuag, tso nws hauv koj cov kav dej hauv cov ntaub ntawv crystalline tuaj yeem ntxiv rau qhov thaiv thiab ua rau muaj kev puas tsuaj ntau dua. Yuav ua li cas yog txoj kev ceev tshaj tua cov cag hauv cov kav dej?
Yuav ua li cas ntsev yaj dej khov rau ntawm txoj kev?
Peb tuaj yeem Tshawb Fawb: Koj tuaj yeem siv cov ntsev tiag tiag es tsis yog cov khoom lag luam tshwj xeeb cov dej khov yaj ntsev. Lub rooj ntsev, pob zeb ntsev, thiab ntsev ua rau dej khov yog tib yam. … Peb yuav tsis pom zoo kom siv tag nrho koj lub rooj ntsev kom yaj cov dej khov ntawm koj txoj kev tsheb vim nws yuav kim dua li yuav ib lub hnab ntawm $10 ice yaj.
Puas cov uas tsis yog cov yaj yaj hauv qhov cub?
Quins yog qhov lom zem heev uas tuaj yeem ua ntau yam duab, qhov ntau thiab tsawg, thiab xim. Lawv kuj hu ua Sequins lossis Qab Zib Shapes thiab siv los kho cov khoom ci. Lawv tsis ua hauj lwm zoo heev rau ci nrog, raws li lawv yuav yaj thiab plam lawvcov duab lom zem.
