Ukunqunywa kwe-chloride ku-sodium cmc yokudla

Ukuzimisela kwe-chloride ku-sodium carboxyboxylylsyl (CMC) kungenziwa kusetshenziswa izindlela ezahlukahlukene zokuhlaziya. Lapha, ngichaza indlela esetshenziswa kakhulu, okuyindlela yeVolhard, eyaziwa nangokuthi indlela ye-MOHR. Le ndlela ifaka ukutholwa ngesixazululo sesiliva i-nitrate (Agno3) isixazululo phambi kwenkomba ye-potassium chromate (K2Cro4).

Nayi inqubo yesinyathelo ngesinyathelo sokunqunywa kwe-chloride ku-sodium cmc ye-food-grade usebenzisa indlela ye-voluv:

Izinto zokwakha kanye ne-reagents:

1. Isampula ye-sodium carboxymethyl cellulose (CMC)
2. Isiliva Nitrate (Agno3) Solution (Emile)
3. Isixazululo se-Potassium Chromate (K2Cro4) Isixazululo
4. Isixazululo se-Nitric Acid (Hno3) (Dlulisa)
5. Amanzi Ahlanganisiwe
6. 0.1 m sodium chloride (NACL) solution (isixazululo esijwayelekile)

Izinsiza:

1. Ibhalansi yokuhlaziya
2. I-Volumetric Flask
3. Ithebhu
4. I-Erlenmeyer Flask
5. Amapayipi
6. UMagnetic Stillrer
7. Imitha ye-PH (Ongakukhetha)

Inqubo:

1. Sikala ngokunemba cishe nge-1 gram yesampula ye-sodium cmc kwiflask ehlanzekile neyomile engama-250 ml erlenmeyer flask.
2. Faka cishe i-100 ml yamanzi anciphile ku-flask bese uvusa kuze kube yilapho i-CMC ichithwe ngokuphelele.
3. Ngeza amaconsi ambalwa wekhambi lenkomba ye-potassium chromate ku-flask. Isixazululo kufanele siguqule ophuzi.
4. Isikhanisi isixazululo esinezixazululo zesiliva ezijwayelekile ze-NITRACER (AGNO3) kuze kube yilapho i-chromate yesiliva ebomvu (i-AG2cro4) ivele nje. Isiphetho sikhonjiswa ngokwakhiwa kokwehla okubomvu okubukekile.
5. Rekhoda ivolumu yesisombululo se-AGNO3 esisetshenziselwa ukutholwa.
6. Phinda ukutholwa ngamasampula angeziwe wesisombululo se-CMC kuze kube yilapho imiphumela ye-concordant iyatholakala (okungukuthi, i-TITRES engaguquki).
7. Lungiselela ukuzimisela okungenalutho usebenzisa amanzi afakwe emanzini aphukile esikhundleni sesampula ye-CMC ukuze akwazi ukulandisa kunoma iyiphi i-chloride ekhona kuma-reagents noma i-glassware.
8. Bala okuqukethwe kwe-chloride kwisampula ye-sodium cmc usebenzisa ifomula elandelayo:

Lapho:

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  V = ivolumu yesisombululo se-agno3 esisetshenziselwa ukutholwa (ku-ML)

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  N = ukuvumelana kwesisombululo se-agno3 (ku-mol / l)

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  M = molarity of nacl standard solution (ku-mol / l)

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  W = Isisindo sesampula ye-sodium cmc (ku-g)

Qaphela: Isici
$35.45$

I-35.45 isetshenziselwa ukuguqula okuqukethwe kwe-chloride kusuka kuma-gramu kuya kumagremu we-chloride ion (
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Cl-).

Izinyathelo zokuzivikela:

1. Phatha wonke amakhemikhali ngokunakekela futhi ugqoke imishini efanelekile yokuvikela yomuntu siqu.
2. Qinisekisa ukuthi yonke i-glassware ihlanzekile futhi yomile ukugwema ukungcoliswa.
3. Yenza isixazululo se-nitrate yesiliva sisebenzisa isixazululo esiyinhloko njengekhambi lesisombululo se-sodium chloride (NACL).
4. Yenza okubhaliwe kancane eduze kwesiphetho ukuze uqinisekise imiphumela efanele.
5. Sebenzisa umgqugquzeli kazibuthe ukuze uqinisekise ukuxubana okuphelele kwezixazululo ngesikhathi sokutholwa.
6. Phinda ukutholwa kokuqinisekisa ukunemba nokunemba kwemiphumela.

Ngokulandela le nqubo, unganquma okuqukethwe kwe-chloride ku-sodium carboxylylsyls (cmc) i-cellulose (cmc) ngokunemba nangokuthembekile, ukuqinisekisa ukuhambisana namazinga ekhwalithi nezidingo zokulawula zezithasiselo zokudla.