Cov Lus Qhia 2, cov roj ntsha, cov roj hauv lub thoob yuav siv tau los siv lub plhaub qe nyoos, ntxiv cov dej npau thiab tshuaj ntxuav, npog, thiab co nws dua kom tshem nws.
Cov lus qhia 3, dej xeb, vim tias cov xeb uas tseem tshuav ntev ntev tuaj yeem ntxuav nrog cov kua qaub dawb, cov xeb tau hais kom muaj cov hlau hydroxide, uas yog alkaline, tsuas yog neutralized nrog acetic acid rau kev tshem tawm.
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