Kutsimikiza kwa Chloride mu Food Grade Sodium CMC

Kutsimikiza kwa kloride muzakudya za sodium carboxymethyl cellulose (CMC) zitha kuchitidwa pogwiritsa ntchito njira zosiyanasiyana zowunikira. Apa, ndifotokoza njira yomwe imagwiritsidwa ntchito kwambiri, yomwe ndi njira ya Volhard, yomwe imadziwikanso kuti njira ya Mohr. Njirayi imaphatikizapo njira ya titration ndi silver nitrate (AgNO3) pamaso pa potassium chromate (K2CrO4) chizindikiro.

Nayi njira ya tsatane-tsatane yodziwira chloride muzakudya za sodium CMC pogwiritsa ntchito njira ya Volhard:

Zipangizo ndi Reagents:

1. Chitsanzo cha sodium carboxymethyl cellulose (CMC).
2. Silver nitrate (AgNO3) yankho (lokhazikika)
3. Potaziyamu chromate (K2CrO4) njira yothetsera
4. Nitric acid (HNO3) solution (dilute)
5. Madzi osungunuka
6. 0.1 M Sodium chloride (NaCl) yankho (muyezo wokhazikika)

Zida:

1. Kuwerengera bwino
2. Botolo la volumetric
3. Burette
4. Botolo la Erlenmeyer
5. Pipettes
6. Maginito oyambitsa
7. pH mita (ngati mukufuna)

Kachitidwe:

1. Yezerani molondola pafupifupi 1 gramu ya sodium CMC chitsanzo mu botolo woyera ndi youma 250 mL Erlenmeyer.
2. Onjezerani pafupifupi 100 ml ya madzi osungunuka mu botolo ndikugwedeza mpaka CMC itasungunuka kwathunthu.
3. Onjezani madontho ochepa a potassium chromate solution mu botolo. Yankho liyenera kusanduka lachikasu.
4. Thirani yankho ndi njira yokhazikika ya silver nitrate (AgNO3) mpaka madontho ofiira-bulauni a silver chromate (Ag2CrO4) angowonekera. Kumapeto kumasonyezedwa ndi mapangidwe amadzimadzi osalekeza ofiira-bulauni.
5. Lembani kuchuluka kwa yankho la AgNO3 lomwe limagwiritsidwa ntchito polemba.
6. Bwerezaninso katchulidwe ndi zitsanzo zowonjezera za yankho la CMC mpaka zotsatira zofananira zitapezedwa (mwachitsanzo, ma voliyumu osasinthika).
7. Konzekerani kutsimikiza kopanda kanthu pogwiritsa ntchito madzi osungunula m'malo mwa chitsanzo cha CMC kuti muyankhe chloride iliyonse yomwe ilipo mu reagents kapena glassware.
8. Kuwerengera chloride zili mu sodium CMC chitsanzo pogwiritsa ntchito njira zotsatirazi:

Kumene:

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  V = voliyumu ya yankho la AgNO3 lomwe limagwiritsidwa ntchito polemba (mu mL)

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  N = chibadwa cha yankho la AgNO3 (mu mol/L)

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  M = molarity wa NaCl standard solution (mu mol/L)

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  W = kulemera kwa chitsanzo cha sodium CMC (mu g)

Zindikirani: Chochititsa
$35.45$

35.45 imagwiritsidwa ntchito kutembenuza chloride zomwe zili mu gramu kupita ku ma gramu a chloride ion (
$��-$

Cl-).

Kusamalitsa:

1. Gwirani mankhwala onse mosamala ndi kuvala zida zoyenera zodzitetezera.
2. Onetsetsani kuti magalasi onse ndi oyera komanso owuma kuti apewe kuipitsidwa.
3. Sinthani njira ya silver nitrate pogwiritsa ntchito muyeso woyambira monga sodium chloride (NaCl) solution.
4. Chitani katchulidwe pang'onopang'ono pafupi ndi pomaliza kuti muwonetsetse zotsatira zolondola.
5. Gwiritsani ntchito maginito osonkhezera kuti mutsimikizire kusakaniza bwino kwa mayankho panthawi ya titration.
6. Bwerezani mawu oti titration kuti muwonetsetse kuti zotsatira zake ndi zolondola.

Potsatira izi, mutha kudziwa zomwe zili mu sodium carboxymethyl cellulose (CMC) m'gulu lazakudya molondola komanso modalirika, ndikuwonetsetsa kuti zikutsatira miyezo yapamwamba komanso zowongolera pazowonjezera zazakudya.