Thaum koj tov kua qaub nrog dej, nws tseem ceeb heev uas yuav tsum tau ntxiv cov kua qaub rau dej es tsis yog lwm txoj hauv kev. Qhov no yog vim cov kua qaub thiab dej ua rau muaj zog exothermic cov tshuaj tiv thaiv, tso cua sov, qee zaum ua kua dej.
Yuav ua li cas thaum koj sib xyaw cov kua qaub nrog dej?
Yog tias koj ntxiv dej rau cov kua qaub, koj tsim cov kua qaub heev ntawm cov kua qaub thaum pib thiab cov tshuaj yuav ua rau kub hnyiab heev, txaws concentrated acid. Yog tias koj ntxiv cov kua qaub rau hauv dej, cov tshuaj uas cov ntaub ntawv yog diluted heev thiab qhov me me ntawm cov cua sov tso tawm tsis txaus rau vaporize thiab spatter nws.
Yuav ua li cas koj yuav tsum ua raws li cov txheej txheem thaum koj sib tov kua qaub thiab dej?
Ib txwm ntxiv kua qaub rau hauv dej, tsis yog dej rau acid. Txwv tsis pub, cov kua qaub tuaj yeem splatter thiab txaws. Thaum koj sib tov cov kua qaub thiab dej, nws ua rau qhov sib txawv txawm tias koj ntxiv cov kua qaub rau hauv dej lossis dej rau cov kua qaub. Ib txwm ntxiv kua qaub rau hauv dej thiab tsis yog lwm txoj hauv kev.
Vim li cas koj yuav tsum ntxiv cov kua qaub rau hauv dej?
Thaum diluting ib qho kua qaub, vim li cas nws thiaj li pom zoo tias cov kua qaub yuav tsum ntxiv rau hauv dej thiab tsis yog dej rau cov kua qaub? Teb: … Txij li thaum ntxiv dej rau cov kua qaub uas muaj kuab heev tso tawm cov cua sov, uas tuaj yeem ua rau tawg thiab kua qaub rau ntawm daim tawv nqaij, khaub ncaws, thiab lwm yam hauv lub cev.
Yuav ua li cas thaum koj sib xyaw sulfuric acid thiab dej?
Sulfuric acid (H2SO4) reacts heev nrog dej hauv cov tshuaj tiv thaiv exothermic heev. Yog hais tias koj ntxiv dej rau cov concentrated sulfuric acid, nws tuaj yeem ua rau kub hnyiabthiab koj yuav tau txais cov kua qaub kub hnyiab.