Video: Cov dej ntau npaum li cas hauv hydrate?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
EXPERIMENTAL MEASUREMENT PERCENT HYDRATION:
Qhov sib txawv ntawm ob pawg yog qhov loj ntawm dej poob. Faib qhov loj ntawm cov dej poob los ntawm thawj pawg ntawm hydrate siv yog sib npaug rau feem ntawm dej hauv qhov sib xyaw. Muab cov feem no los ntawm 100 muab qhov feem pua dej hauv hydrate.
Ib sab ntawm qhov no, koj yuav ua li cas pom cov feem pua ntawm cov dej hauv cov hydrate?
Faib qhov loj ntawm cov dej poob los ntawm qhov loj ntawm hydrate thiab muab faib los ntawm 100. Theoretical (qhov tseeb) feem pua hydration ( feem pua dej ) tuaj yeem xam los ntawm cov qauv ntawm cov hydrate los ntawm kev faib qhov loj ntawm dej nyob rau hauv ib tug mole hydrate los ntawm molar loj ntawm lub hydrate thiab muab faib los ntawm 100.
Tsis tas li ntawd, pes tsawg grams dej yuav muaj nyob rau hauv 100g Hydrate? Teb: Qhov loj ntawm dej tam sim no nyob rau hauv muab tus nqi ntawm hydrate yog 36.68 grams thiab tus naj npawb ntawm moles dej yog 2,04m. Li no, qhov loj ntawm dej tam sim no nyob rau hauv muab tus nqi ntawm hydrate yog 36.68 grams.
Ib yam li ntawd, koj tuaj yeem nug, puas tag nrho cov hydrates poob dej?
hydrates yog cov tebchaw uas muaj dej uas yog loosely bonded thiab thaum lub hydrate yog rhuab tshaj 100 ° c lub dej nyob rau hauv lawv evaporates. qee qhov sib xyaw ua ke tsuas yog tsim dej raws li cov khoom ntawm decomposition. yog tag nrho cov hydrates xoob dej thaum cua sov.
Qhov feem pua ntawm cov dej hauv CuSO4 xh2o yog dab tsi?
36%
Pom zoo:
Qhov loj feem pua ntawm cov dej hauv hydrate CuSO4 5h2o yog dab tsi?
Ib mole ntawm CuSO4•5H2O muaj 5 moles dej (uas sib haum rau 90 grams dej) ua ib feem ntawm nws cov qauv. Yog li, cov khoom CuSO4•5H2O ib txwm muaj 90/250 lossis 36% dej los ntawm qhov hnyav
Dab tsi yog qhov tseem ceeb tshaj plaws uas yuav tsum muaj rau cov kua dej ntws hauv cov kav dej Dab tsi lwm yam cuam tshuam rau cov dej ntws?
Thaum ib qho kev quab yuam sab nraud yog exerted rau ntawm cov kua uas muaj, qhov tshwm sim siab yog kis sib npaug thoob plaws hauv cov kua. Yog li txhawm rau kom dej ntws, dej xav tau qhov sib txawv siab. Cov kav dej kuj tuaj yeem cuam tshuam los ntawm cov kua dej, cov yeeb nkab loj, qhov kub thiab txias (cov kav dej khov), cov kua dej ntom ntom
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