Video: Koj tuaj yeem txheeb xyuas cov hlau li cas los ntawm kev ntsuas nplaim taws?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Chemists siv tib txoj cai no rau txiav txim tus kheej ntawm cov hlau tsis paub siv qhov ntsuas nplaim taws . Thaum lub sij hawm a nplaim taws kuaj , chemists coj ib tug tsis paub hlau thiab muab tso rau hauv qab a nplaim taws . Cov nplaim taws yuav tig xim sib txawv raws li qhov twg hlau yog nyob rau hauv cov khoom. Cov kws tshawb fawb tuaj yeem ua tau txheeb xyuas lawv yam tsis paub.
Nyob rau hauv no hais txog, yuav ua li cas cov nplaim taws txheeb xyuas cov hlau ions?
Kev sim nplaim taws yog siv los txheeb xyuas lub xub ntiag ntawm ib tug kuj tsawg ntawm hlau ions hauv ib qho kev sib xyaw. Tsis yog tag nrho hlau ions muab nplaim taws xim. Ntxuav lub platinum los yog nichrome (nickel-chromium alloy) hlau los ntawm dipping nws mus rau hauv concentrated hydrochloric acid thiab ces tuav nws nyob rau hauv ib tug kub Bunsen. nplaim taws.
Ib yam li ntawd, nws puas yog cov hlau lossis cov hlau tsis yog hlau uas ua rau cov nplaim taws kuaj xim? A hlau ntsev muaj cov khoom xyaw cation (the hlau ) thiab anion. Cov anion tuaj yeem cuam tshuam qhov tshwm sim ntawm cov nplaim taws kuaj . Piv txwv li, tooj liab (II) compound nrog a tsis yog -halide tsim tawm ib ntsuab nplaim taws , thaum tooj liab (II) halide yields xiav-ntsuab nplaim taws.
Kuj Paub, qhov ntsuas nplaim taws qhia cov ntsiab lus li cas?
Vim txhua tus keeb muaj ib tug raws nraim txoj kab emission spectrum, zaum tau txheeb xyuas lawv los ntawm xim ntawm nplaim taws lawv tsim. Piv txwv li, tooj liab ua rau xiav nplaim taws , lithium thiab strontium ib tug liab nplaim taws , calcium thiab txiv kab ntxwv nplaim taws , sodium ib daj nplaim taws , thiab barium ib ntsuab nplaim taws.
Puas yog kev sim nplaim taws ua tau zoo los txiav txim siab cov hlau hauv qhov sib tov?
1 Teb. Yog thiab tsis yog. A nplaim taws kuaj yuav tsuas qhia qhov ci ntsa iab lossis pom ntau dua nplaim taws ntawm ib tug muab hlau ion thaum ib los yog ntau dua hlau muaj ions.
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