Qhov sib txawv tseem ceeb ntawm kev muaj pes tsawg leeg thiab cov tshuaj tiv thaiv stoichiometry yog qhov muaj pes tsawg leeg stoichiometry yog hais txog atomic make-up ntawm cov tshuaj lom neeg, whereas cov tshuaj tiv thaiv stoichiometry yog hais txog tus nqi ntawm cov khoom siv los yog tsim tawm thaum muaj tshuaj lom neeg.
Stoichiometry yog ib lo lus tshuaj uas piav qhia txog cov ntaub ntawv ntau txog cov tshuaj lom neeg lossis cov tshuaj tiv thaiv tshuaj. Yog hais tias cov ntaub ntawv no yog hais txog ib tug tshuaj compound, ces peb hu nws muaj pes tsawg leeg stoichiometry; Yog hais tias nws yog hais txog tshuaj tiv thaiv, peb tuaj yeem hu nws cov tshuaj tiv thaiv stoichiometry.
Dab tsi yog Kev Sau Stoichiometry?
Composition stoichiometry yog qhov kev soj ntsuam ntau ntawm cov tshuaj lom neeg hais txog nws cov atomic muaj pes tsawg leeg. Lo lus no yog hais txog hom atoms thiab lawv tus lej tam sim no nyob rau hauv ib qho tshuaj lom neeg. Peb tuaj yeem txiav txim siab qhov no siv cov tshuaj formula ntawm lub compound. Atomicity ntawm ib lub molecule muab tag nrho cov atoms tam sim no nyob rau hauv ib tug tshuaj compound. Tab sis nws tsis qhia meej txog cov tshuaj lom neeg uas cov atoms ntawm cov khoom sib xyaw thiab lawv cov lej. Txawm li cas los xij, peb tuaj yeem siv qhov sib xyaw stoichiometry ntawm ib qho kev sib xyaw ua ke los kwv yees cov tshuaj formula. Yog li ntawd, muaj pes tsawg leeg stoichiometry tsuas yog cov tshuaj pleev ib ce ntawm ib hom tshuaj.
Piv txwv li, muaj pes tsawg leeg stoichiometry ntawm qabzib molecule yog muab li rau atoms ntawm carbon, kaum ob atoms ntawm hydrogen thiab rau atoms ntawm oxygen. Yog li, peb tuaj yeem txiav txim siab tias ib qho molecule ntawm qabzib muaj cov pa roj carbon, hydrogen thiab oxygen atoms hauv qhov piv ntawm 6: 12: 6. Qhov no yog qhov muaj pes tsawg leeg stoichiometry ntawm qabzib.
Daim duab 01: Tshuaj muaj pes tsawg leeg ntawm cov piam thaj molecule
Muaj ntau txoj hauv kev los txiav txim siab qhov muaj pes tsawg leeg stoichiometry ntawm qhov tsis paub qhov sib xyaw. Cov qauv ntawm qhov tsis paub qhov sib xyaw tuaj yeem siv los txiav txim siab hom tshuaj lom neeg hauv cov qauv ntawd nrog rau qhov loj ntawm txhua lub ntsiab lus. Tom qab ntawd tus naj npawb ntawm moles ntawm txhua lub ntsiab lus ntawm ib qho qauv tuaj yeem suav nrog siv cov khoom no. Cov txiaj ntsig molar tuaj yeem raug muab sib npaug kom tau txais qhov sib piv tau tshaj plaws ntawm ntau hom atoms hauv cov qauv los kwv yees cov qauv molecular.
Reaction Stoichiometry yog dab tsi?
Reaction stoichiometry yog qhov piv ntawm cov tshuaj reactants thiab cov khoom ntawm qee yam tshuaj tiv thaiv. Qhov tshwm sim no tseem ceeb heev hauv kev ntsuas cov tshuaj tiv thaiv tshuaj kom tau txais kev sib raug zoo ntawm cov reactants thiab ntau npaum li cas cov khoom peb tuaj yeem tau txais los ntawm reacting hom.
Daim duab 02: Ib qho piv txwv rau Kev Sib Tham Stoichiometry
Lub tswv yim ntawm cov tshuaj tiv thaiv stoichiometry yog raws li txoj cai ntawm kev txuag huab hwm coj, uas qhia tau tias tag nrho cov huab hwm coj ntawm reactants yuav tsum sib npaug rau tag nrho cov khoom lag luam vim tias huab hwm coj tsis tuaj yeem tsim lossis rhuav tshem, tsuas yog hloov mus rau lwm yam. cov ntaub ntawv, ib yam li lub zog.
Cia peb xav txog ib qho piv txwv kom nkag siab txog txoj kev xav tom qab cov tshuaj tiv thaiv stoichiometry. Cov tshuaj tiv thaiv ntawm alkali hlau thiab dej ua rau lub zog hluav taws xob, hydroxide ntawm cov hlau, thiab cov roj hydrogen. Ntawm no, cov ntsiab lus peb paub yog qhov loj ntawm alkali hlau siv thiab cov dej siv rau cov tshuaj tiv thaiv. Tom qab ua tiav cov tshuaj tiv thaiv, cov roj hydrogen tuaj yeem sau tau thiab siv nws lub ntim, cov moles ntawm hydrogen gas hloov zuj zus tuaj yeem suav. Yog li, piv txwv tias tag nrho cov alkali hlau reacted nrog dej, peb tuaj yeem tau txais qhov sib piv ntawm cov reactants thiab cov khoom koom nrog hauv cov tshuaj tiv thaiv no. Qhov no yog cov tshuaj tiv thaiv stoichiometry ntawm alkali hlau hauv cov tshuaj tiv thaiv dej.
Dab tsi yog qhov sib txawv ntawm Kev Sau thiab Kev Ruaj Ntseg Stoichiometry?
Qhov sib txawv tseem ceeb ntawm kev muaj pes tsawg leeg thiab cov tshuaj tiv thaiv stoichiometry yog qhov muaj pes tsawg leeg stoichiometry yog hais txog lub atomic make-up ntawm cov tshuaj compound, whereas cov tshuaj tiv thaiv stoichiometry yog hais txog tus nqi ntawm cov khoom siv los yog tsim thaum lub sij hawm tshuaj tiv thaiv. Thaum muaj pes tsawg leeg stoichiometry muab qhov sib piv ntawm cov atoms ntawm txhua yam tshuaj muaj nyob rau hauv ib qho kev sib xyaw, cov tshuaj tiv thaiv stoichiometry muab qhov piv ntawm cov reactants thiab cov khoom koom nrog hauv ib qho tshuaj tiv thaiv.
Hauv qab infographic qhia txog qhov sib txawv ntawm qhov sib xyaw thiab cov tshuaj tiv thaiv stoichiometry.
Summary – Composition vs Reaction Stoichiometry
Stoichiometry yog ib txoj hauv kev ntawm kev soj ntsuam ntau ntawm cov tshuaj lom neeg lossis cov tshuaj tiv thaiv tshuaj. Qhov sib txawv tseem ceeb ntawm kev muaj pes tsawg leeg thiab cov tshuaj tiv thaiv stoichiometry yog qhov muaj pes tsawg leeg stoichiometry yog hais txog cov atomic make-up ntawm cov tshuaj lom neeg, whereas cov tshuaj tiv thaiv stoichiometry yog hais txog tus nqi ntawm cov tebchaw noj los yog tsim thaum muaj tshuaj lom neeg.
