Video: Puas yog qhov kub ntawm kev daws rau LiCl exothermic lossis endothermic?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Teb thiab piav qhia:
Lub tshav kub ntawm kev daws rau LiCl yog exothermic. Thaum lithium thiab chloride ionize nyob rau hauv dej , lawv yuav tsum xub sib cais ntawm ib leeg.
Tsis tas li ntawd kom paub yog, yog lub tshav kub ntawm kev daws rau NH4Cl exothermic los yog endothermic?
Ntawm chav tsev kub (T = 300K), kev tawg ntawm ammonium chloride yog ib qho endothermic process, vim daws hnov txias dua li cov khoom NH4 Cl dissolves nyob rau hauv dej thiab absorbs zog los ntawm dej ua li ntawd. Yog li ntawd lub enthalpy ntawm dissolution yog POSITIVE.
Ib sab saum toj no, LiCl puas yaj hauv dej? Lithium chloride
| Cov npe | |
|---|---|
| Boiling point | 1, 382 ° C (2, 520 ° F; 1, 655 K) |
| Solubility hauv dej | 68.29 g / 100 mL (0 ° C) 74.48 g / 100 mL (10 ° C) 84.25 g / 100 mL (25 ° C) 88.7 g / 100 mL (40 ° C) 123.44 g / 100 mL (100 ° C) |
| Solubility | Soluble hauv hydrazine, methylformamide, butanol, selenium (IV) oxychloride, propanol |
Raws li txoj cai, yog vim li cas lithium chloride exothermic?
Nws txhais tau hais tias lub zog siv los rhuav tshem cov lattice rau hauv nws cov ions tsawg dua lub zog tso tawm thaum cov ions ua cov ntawv cog lus nrog cov dej molecules, yog li qhov kev hloov pauv tag nrho yog qhov tsis zoo (lub zog raug tso tawm).
Yog vim li cas ib tug endothermic tshav kub ntawm cov tshuaj yaj?
Hauv endothermic cov tshuaj tiv thaiv, lub zog net los ntawm cov nyiaj ua haujlwm tawg thiab tsim cov txiaj ntsig hauv kub lub zog raug absorbed thaum lub solute yaj hauv daws . Raws li Le Chatelier's Principple, lub kaw lus yuav hloov kho qhov nce hauv qhov no kub los ntawm kev txhawb nqa kev tawg tshuaj tiv thaiv kom nqus tau qee qhov kub zog.
Pom zoo:
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Puas yog ntxiv ntsev rau dej endothermic lossis exothermic?
Nws tsuas yog siv zog me ntsis ntxiv kom cais cov ions ntawm ib leeg dua li tso tawm los ntawm cov dej molecules nyob ib puag ncig cov ions. Qhov no txhais tau hais tias tsuas yog me ntsis ntxiv zog yuav tsum tau muab tso rau hauv qhov kev daws teeb meem dua li tso rov qab rau hauv cov tshuaj; Yog li ntawd dissolving rooj ntsev hauv dej yog endothermic