Indlela yokuvavanya ukongezwa kwezinto ezingaphiliyo i

Ukuvavanya njani ukongezwa kwezinto ezingaphiliyo kwizixhobo zokusetyenzwa kwe-ACR:

Indlela yokubona ye-Ca2+:

Izixhobo zovavanyo kunye nee-reagents: i-beaker; Ibhotile emile yecone; Ifaneli; i-burette Isithando somlilo sombane; I-ethanol engenamanzi; I-Hydrochloric acid, i-NH3-NH4Cl isisombululo se-buffer, isalathisi se-calcium, i-0.02mol / L EDTA isisombululo esiqhelekileyo.

Amanyathelo ovavanyo:

1. Ukulinganisa ngokuchanekileyo umlinganiselo othile wesampula yokuncedisa i-ACR (echanekileyo kwi-0.0001g) kwaye uyibeke kwi-beaker. Yimanzise nge-ethanol e-anhydrous, uze udibanise i-1: 1 i-hydrochloric acid engaphezulu kwaye uyitshise kwisithando sombane ukuze uphendule ngokupheleleyo i-calcium ions kunye ne-hydrochloric acid;

2. Hlamba ngamanzi kwaye ucoce ngefuneli ukuze ufumane ulwelo olucacileyo;

3. Lungisa ixabiso le-pH libe likhulu kune-12 kunye ne-NH3-NH4Cl isisombululo se-buffer, yongeza inani elifanelekileyo lesalathisi se-calcium, kunye ne-titrate kunye ne-0.02mol / L EDTA isisombululo esiqhelekileyo. Isiphelo kuxa umbala utshintsha ukusuka emfusa ebomvu ukuya eluhlaza okwesibhakabhaka;

4. Yenza imifuniselo engenanto ngaxeshanye;

5. Bala C # a2+=0.02 $(V-V0) $0.04004M $%&&

V - Umthamo (mL) wesisombululo se-EDTA esisetyenzisiweyo xa kuhlolwa iisampulu zoncedo lwe-ACR.

V # - Umthamo wesisombululo esisetyenzisiweyo ngexesha lovavanyo olungenanto

M – Viyisha ubunzima (g) besampulu yoncedo lwe-ACR.

Indlela yokutshisa yokulinganisa izinto ezingaphiliyo:

Izixhobo zovavanyo: ibhalansi yohlalutyo, i-muffle furnace.

Amanyathelo ovavanyo: Thatha i-0.5,1.0g ye-ACR iisampulu zokuncedisa ukusetyenzwa (zichanekile ukuya kwi-0.001g), zibeke kwi-950 ye-furnace ye-muffle engaguqukiyo yobushushu ngeyure e-1, zipholisa phantsi, kwaye ulinganise ukubala intsalela eseleyo yokutsha. Ukuba izinto ezingaphiliyo zongezwa kwiisampuli zoncedo lwe-ACR, kuya kubakho intsalela eninzi.