Video: Yuav ua li cas thaum HCl tov nrog dej?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Thaum peb ntxiv HCl rau H2O HCl yuav dissociate thiab tawg rau hauv H + thiab Cl-. Txij li thaum H + (feem ntau hu ua "proton") thiab Cl- yog yaj hauv dej peb tuaj yeem hu lawv H + (aq) thiab Cl- (aq). Thaum muab tso rau hauv dej cov H+ yuav ua ke nrog H2O los ua H3O+, cov hydroniumion.
Yog li ntawd, yuav ua li cas thaum dej ntxiv rau HCl?
Yog peb ntxiv muaj zog acid los yog muaj zog puag rau dej , pH yuav hloov pauv. Piv txwv li, ntxiv muaj zog acid xws li HCl rau dej ua rau cov tshuaj tiv thaiv HCl + H2O → H3O+ + Cl-. Qhov tshwm sim loj concentration ntawm OH- ua rau kev daws teeb meem yooj yim dua thiab ua rau muaj kev nce siab hauv pH.
Qhov thib ob, ua li cas rau txhua HCl molecule thaum nws yaj hauv dej? HCl yaj hauv dej (H2O). Cov hydrogen ions (protons) react nrog dej los tsim hydronium ions (H3O) thiab cov chloride ions yog dawb hauv cov kua. H-Cl covalent bond ispolar.
Ib yam li ntawd, koj tuaj yeem nug, yuav ua li cas thaum dej sib xyaw nrog cov kua qaub?
Thaum koj sib tov kua qaub nrog dej , nws tseem ceeb heev uas yuav tau ntxiv cov kua qaub mus rau dej ntau dua li lwm txoj hauv kev. Qhov no yog vim kua qaub thiab dej react nyob rau hauv ib tug vigorous exothermic cov tshuaj tiv thaiv, tso cua sov, tej zaum boiling cov kua. Thaum koj ntxiv dej rau kua qaub , cov dej boils thiab kua qaub mayplatter thiab txaws!
Yuav ua li cas thaum lub hauv paus ntxiv rau dej?
Ntxiv dej rau acid los yog puag yuav hloov nws cov pH. Dej feem ntau yog dej molecules yog li ntawd ntxiv dej rau acid los yog puag txo cov concentration ntawm ions hauv cov tshuaj. Thaum ib tug acidic tov yog diluted nrog dej qhov concentration ntawm H + ionsdecreases thiab pH ntawm cov tshuaj nce mus rau 7.
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