Video: Dab tsi yog tsim thaum ntsev yaj hauv dej?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Thaum lub rooj ntsev , sodium chloride, dissolves nyob rau hauv dej , nws dissociates rau hauv nws cov cations thiab anions, Na+ thiab Cl-. Ionic tebchaw xws li sodium chloride, uas yaj hauv dej thiab dissociate rau daim ntawv ions, hu ua electrolytes. Thov Saib cov animation 10.3 ntawm kev daws teeb meem ionic.
Tib neeg kuj nug, ua li cas thaum ntsev yaj hauv dej?
Thaum twg ntsev yog tov nrog dej , cov ntsev dissolves vim covalent bonds ntawm dej muaj zog tshaj cov ionic bonds nyob rau hauv lub ntsev molecules. Dej molecules rub cov sodium thiab chloride ions sib nrug, rhuav tshem cov ionic daim ntawv cog lus uas tuav lawv ua ke.
Ib yam li ntawd, vim li cas ntsev thiaj tsis yaj hauv dej? Ntxiv ntsev raws li tus solute rau dej (solvent) at cov dej freezing kub disrupts lub equilibrium ntawm dej . Ntsev molecules sib tw nrog thiab tshem tawm dej molecules, tab sis yuav tua cov dej khov uas yog tsim nyob rau hauv no juncture. Cov ntsev nce lub melting point ntawm dej , lub ntsiab lus ntsev slows cov dej khov melting.
Ua raws li qhov no hauv kev xav, thaum ntsev yaj hauv dej hom tshuaj dab tsi tsim?
Teb: Thaum twg Ntsev dissolves hauv dej ib homogeneous sib tov yog tsim , vim hais tias sib txawv Cheebtsam yog sib tov tusyees nyob rau hauv lub yam khoom.
Yuav ua li cas yaj ntsev hauv dej sai sai?
Ntxiv txias dej mus rau ib qho (xws li dej khov dej , los yog dej los ntawm lub tub yees), ntxiv chav sov dej mus rau qhov thib ob, thiab ntxiv kub dej mus rau peb. Tom qab ntawd, ntxiv 1 teaspoon ntawm ntsev rau txhua lub khob tib lub sijhawm, thiab lub sijhawm ntev npaum li cas nws yuav siv sijhawm ntev npaum li cas yaj.
Pom zoo:
Dab tsi yog qhov tseem ceeb ntawm cov ntsev yaj hauv dej hiav txwv?
Ntsev nyob rau hauv dej hiav txwv los ntawm pob zeb nyob rau hauv av. Cov nag uas ntog rau hauv av muaj qee cov pa roj carbon dioxide yaj los ntawm cov huab cua ib puag ncig. Qhov no ua rau cov dej nag ua rau acidic me ntsis vim yog carbonic acid (uas tsim los ntawm carbondioxide thiab dej)
Dab tsi ions tsim thaum barium nitrate yaj hauv dej?
Thaum Ba(NO3)2 yaj nyob rau hauv H2O (dej) nws yuav dissociate (dissolve) rau hauv Ba 2+ thiab NO3- ions
Dab tsi tshwm sim thaum ntsev yaj hauv dej ntshiab?
Solutes yaj nyob rau hauv dej (solvent) yog hu ua aqueous daws. Yog li thaum cov khoom ionic (ntsev) yaj hauv dej, nws tau tawg mus rau hauv ib tus neeg cations thiab anions uas nyob ib puag ncig los ntawm dej molecules. Piv txwv li, thaum NH4 NO3 yaj nyob rau hauv dej nws tawg mus rau hauv nyias ions
Cov acids tsim dab tsi thaum yaj hauv dej?
Feem ntau cov kua qaub tso tawm ions hauv dej, uas ua ke nrog dej molecule los tsim hydronium () ion. Cov ion no ua ke nrog dej los tsim hydronium ion. Piv txwv. Yog li, luv luv, Ib qho kua qaub tsim hydronium ion thaum nws yaj hauv dej
Puas yog cov kua qaub tsim hydronium ions thaum lawv yaj hauv dej?
Cov kua qaub yog ib qho sib xyaw uas yaj hauv dej los ua ib hom kev daws teeb meem. Chemically, cov kua qaub yog ib yam khoom uas tsim hydronium ions (H3O +) thaum yaj hauv dej. Thaum hydrochloric acid (HCl) yaj nyob rau hauv dej, nws ionizes, splitting mus rau hauv hydrogen (H +) thiab chlorine (Cl-) ions