Boikemisetso ba Chloride ho Food Grade Sodium CMC

Qeto ea chloride ho sodium carboxymethyl cellulose (CMC) ea boemo ba lijo e ka etsoa ka mekhoa e fapaneng ea tlhahlobo. Mona, ke tla hlalosa mokhoa o sebelisoang hangata, e leng mokhoa oa Volhard, o tsejoang hape e le mokhoa oa Mohr. Mokhoa ona o kenyelletsa titration ka tharollo ea silevera ea nitrate (AgNO3) ka pel'a pontšo ea potassium chromate (K2CrO4).

Mona ke mohato oa mohato oa mohato oa ho fumana chloride ho sodium CMC ea boemo ba lijo ka mokhoa oa Volhard:

Lisebelisoa le li-reagents:

1. Mohlala oa sodium carboxymethyl cellulose (CMC).
2. Silver nitrate (AgNO3) tharollo (e tloaelehileng)
3. Potassium chromate (K2CrO4) sesupo sa tharollo
4. Tharollo ea nitric acid (HNO3) (hlapolla)
5. Metsi a hloekisitsoeng
6. 0.1 M Sodium chloride (NaCl) tharollo (tharollo e tloaelehileng)

Thepa:

1. Ho leka-lekanya ho leka-lekanya
2. Botlolo ea volumetric
3. Borette
4. Botlolo ea Erlenmeyer
5. Li-pipettes
6. Sehlahisoa sa Magnetic
7. pH mitha (ho ikhethela)

Mokhoa:

1. Beha boima bo nepahetseng ka gram e le 1 ea sampole ea sodium CMC ho botlolo e hloekileng le e omileng ea 250 mL Erlenmeyer.
2. Eketsa hoo e ka bang 100 ml ea metsi a qhibilihisitsoeng ka har'a botlolo 'me u hlohlelletse ho fihlela CMC e qhibiliha ka ho feletseng.
3. Kenya marotholi a seng makae a tharollo ea potassium chromate indicator botlolong. Tharollo e lokela ho fetoha mosehla o fokolang.
4. Titrate tharollo ka tharollo e tloaelehileng ea silevera ea nitrate (AgNO3) ho fihlela metsi a bofubelu bo sootho a silevera chromate (Ag2CrO4) a hlaha feela. Qetello e bontšoa ke ho thehoa ha pula e sa khaotseng ea bofubelu bo sootho.
5. Rekota bophahamo ba tharollo ea AgNO3 e sebelisitsoeng bakeng sa titration.
6. Pheta titration ka lisampole tse ling tsa tharollo ea CMC ho fihlela liphetho tse lumellanang li fumaneha (ke hore, lipalo tse lumellanang tsa titration).
7. Lokisetsa boikemisetso bo se nang letho u sebelisa metsi a hloekisitsoeng sebakeng sa sampole ea CMC ho ikarabella bakeng sa chloride efe kapa efe e teng ho li-reagents kapa glassware.
8. Bala litaba tsa chloride ka har'a sampole ea sodium CMC u sebelisa foromo e latelang:

Moo:

• $�$

  V = boholo ba tharollo ea AgNO3 e sebelisoang bakeng sa titration (ka mL)

• $�$

  N = tloaelo ea tharollo ea AgNO3 (ka mol / L)

• $�$

  M = molarity ea tharollo e tloaelehileng ea NaCl (ka mol/L)

• $�$

  W = boima ba sampole ea sodium CMC (ka g)

Tlhokomeliso: Lebaka
$35.45$

35.45 e sebelisoa ho fetola litaba tsa chloride ho tloha ho ligrama ho ligrama tsa chloride ion (
$��-$

Cl−).

Mehato ya tlhokomelo:

1. Tšoara lik'hemik'hale tsohle ka hloko 'me u apare lisebelisoa tse loketseng tsa ho itšireletsa.
2. Netefatsa hore lisebelisoa tsohle tsa khalase li hloekile ebile li omme ho qoba tšoaetso.
3. Eketsa tharollo ea silevera ea nitrate ka tšebeliso ea maemo a mantlha joalo ka tharollo ea sodium chloride (NaCl).
4. Etsa titration butle haufi le pheletso ho netefatsa liphetho tse nepahetseng.
5. Sebelisa magnetic stirrer ho etsa bonnete ba hore motsoako o feletseng oa tharollo nakong ea titration.
6. Pheta titration ho netefatsa ho nepahala le ho nepahala ha liphetho.

Ka ho latela ts'ebetso ena, o ka tseba hore na chloride e kae ka har'a sodium carboxymethyl cellulose (CMC) ea boemo ba lijo ka nepo le ka ts'epo, ho netefatsa hore ho latela litekanyetso tsa boleng le litlhokahalo tsa taolo bakeng sa li-additives tsa lijo.