Dab tsi yog cov ntsiab lus ntawm stoichiometry?
Dab tsi yog cov ntsiab lus ntawm stoichiometry?

Video: Dab tsi yog cov ntsiab lus ntawm stoichiometry?

Video: Dab tsi yog cov ntsiab lus ntawm stoichiometry?
Video: lub hom phiaj loj tshaj plaws ntawm kev ntseeg yog dab tsi 2024, Kaum ib hlis
Anonim

Cov cov ntsiab cai ntawm stoichiometry yog raws li txoj cai ntawm kev txuag ntawm huab hwm coj. Cov teeb meem tsis tuaj yeem tsim los yog rhuav tshem, yog li qhov loj ntawm txhua lub ntsiab lus tam sim no hauv cov khoom ntawm cov tshuaj tiv thaiv tshuaj yuav tsum sib npaug rau qhov loj ntawm txhua qhov thiab txhua lub ntsiab lus tam sim no hauv cov reactant.

Hauv qhov no, cov tshuaj tiv thaiv stoichiometry yog dab tsi?

Stoichiometry yog ib feem ntawm chemistry uas siv cov kev sib raug zoo ntawm cov reactants thiab / los yog cov khoom nyob rau hauv ib tug tshuaj tshuaj tiv thaiv txhawm rau txiav txim siab cov ntaub ntawv xav tau. Hauv Greek, stoikhein txhais tau hais tias lub caij thiab metron txhais tau tias ntsuas, yog li stoichiometry txhais lus txhais tau hais tias qhov ntsuas ntawm cov ntsiab lus.

Tsis tas li ntawd, cov kauj ruam hauv kev daws teeb meem stoichiometry yog dab tsi? Muaj plaub theem hauv kev daws teeb meem stoichiometry:

  • Sau qhov sib npaug tshuaj sib npaug.
  • Hloov cov units ntawm cov khoom muab (A) rau moles.
  • Siv qhov piv ntawm mole los xam cov moles ntawm cov khoom xav tau (B).
  • Hloov moles ntawm cov khoom xav tau mus rau qhov xav tau.

Ib tug kuj yuav nug, dab tsi yog ib qho piv txwv ntawm stoichiometry?

Stoichiometry feem ntau yog siv los sib npaug ntawm cov tshuaj sib npaug (react stoichiometry ). Rau piv txwv , ob lub pa roj carbon diatomic, hydrogen thiab oxygen, tuaj yeem sib xyaw ua kua, dej, hauv cov tshuaj tiv thaiv exothermic, raws li tau piav qhia los ntawm qhov sib npaug hauv qab no: 2 H. 2 + O. 2 → 2 H. 2O.

Lub hom phiaj ntawm stoichiometry yog dab tsi?

Kev piav qhia: Stoichiometry tso cai rau peb ua kev kwv yees txog qhov tshwm sim ntawm cov tshuaj tiv thaiv. Ua kom muaj txiaj ntsig kwv yees yog ib qho tseem ceeb hom phiaj ntawm science, lwm yam yog lub peev xwm los piav phenomena peb soj ntsuam nyob rau hauv lub ntuj ntiaj teb no.

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