Rau lub neej ntses, tsis tsuas yog ntsuas kub ntawm dej hauv dej thoob dej yug ntses yog ib qho tseem ceeb heev, tab sis kuj nws qhov nyuaj. Qhov no yog lub npe rau qib uas muaj ntsev calcium thiab magnesium. Dab tsi yuav tsum yog qhov nyuaj ntawm dej thiab yuav txiav txim siab nws li cas?
Cov Lus Qhia
Kauj ruam 1
Lub cev khov kho feem ntau muab faib ua txoj haujlwm ruaj khov thiab ib ntus. Lub sijhawm ib ntus tseem hu ua carbonate, nws cuam tshuam nrog kev muaj cov calcium thiab magnesium ions hauv dej, uas tuaj yeem tshem tawm los ntawm kev kub npau npau. Kev ntsuas ntawm carbonate hardness feem ntau yog kwv yees los ntawm kev rhaub ib qhov dej ntawm lub cev thiab ntsuas qhov txo mus rau qhov txo. Tab sis hauv kev xyaum nws yog qhov nyuaj dua ua qhov no, yog li cov hauv qab no siv tau: npaj qhov tsim nyog reagents thiab khoom siv. Koj yuav xav tau cov dej lim, 38% hydrochloric acid tov (koj tuaj yeem yuav nws ntawm lub khw muag khoom kho vajtse lossis nqa tawm los ntawm koj lub tsev kawm ntawv chav ua chemical), methyl txiv kab ntxwv qhia, ntsuas tsom iav, thiab iav uas tsis muaj koob.
Kauj ruam 2
Npaj cov tshuaj uas xav tau hydrochloric acid tov. Txhawm rau ua qhov no, yaj 4 ml ntawm yuav dej hydrochloric acid hauv 300 ml ntawm dej distilled. Tom qab ntawd nqa qhov ntim ntawm kev daws rau ib litre. Ua tib zoo saib xyuas: kev tiv tauj ntawm cov kua qaub rau ntawm daim tawv nqaij yuav ua rau muaj kev kub ntxhov hauv tshuaj lom neeg. Tsis txhob nqus pa acid vapors thiab, thaum diluting, nco ntsoov ntxiv cov kua qaub rau hauv dej, thiab tsis hloov tawm mus rau lwm qhov.
Kauj ruam 3
Ntsuas tawm 50 ml. thoob dej yug ntses dej rau cov kev tshawb fawb. Ntxiv cov methyl txiv kab ntxwv qhov taw qhia rau nws kom txog thaum koj tau txais nplua nuj daj. Kos cov kua qaub rau hauv lub taub hau thiab ntxiv poob poob mus rau txoj kev daws teeb meem, soj ntsuam kev hloov xim. Sai li cov xim ntawm kev daws hloov pauv mus rau cov txiv kab ntxwv, nco ntsoov siv cov kua qaub ntau.
Kauj ruam 4
Lub hardness tau laij raws li hauv qab no: dej hardness = (acid concentration * acid volume) / tus nqi dej. Lub carbonate hardness yuav sib npaug rau qhov ntim ntawm cov kua qaub noj. Txhawm rau hloov cov txiaj ntsig tau los ntawm ml / eq mus rau degrees, tshaj tawm nws los ntawm 2.804.
Kauj ruam 5
Kuaj yog tias qhov txiaj ntsig kom tau qhov nyuaj yog tsim nyog rau kev yug koj hom ntses. Koj tuaj yeem muag cov dej los ntawm kev ntxiv dej qab zib.
