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Video: Dab tsi yog cov qauv sib xyaw?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A compound yog ib yam khoom uas tsim los ntawm ib qho kev faib ua feem ntawm ob lossis ntau lub ntsiab lus. Ib qho tshuaj qauv qhia peb tus lej ntawm atoms ntawm txhua lub ntsiab lus hauv a compound . Nws muaj cov cim ntawm cov atoms ntawm lub ntsiab tam sim no nyob rau hauv lub compound nrog rau ntau npaum li cas muaj rau txhua lub ntsiab lus hauv daim ntawv ntawm subscripts.
Hais txog qhov no, cov qauv ntawm ib qho kev sib xyaw siv tau li cas?
Cov molecular formula ntawm ib tug compound muab tus naj npawb tseeb ntawm txhua yam sib txawv ntawm atom (piv txwv li hom khoom) tam sim no hauv ib lub molecule ntawm compound . Qhov no yog pab tau vim nws tso cai rau koj mus ua hauj lwm tawm qhov hnyav molecular ntawm lub compound , tab sis kuj tuaj yeem txwv.
Ib yam li ntawd, dab tsi yog qhov empirical formula ntawm ib qho compound? Empirical Formula - A qauv uas muab qhov yooj yim tshaj plaws-tus lej piv ntawm atoms hauv a compound . Pib nrog tus naj npawb ntawm grams ntawm txhua lub caij, muab rau hauv qhov teeb meem. qhov loj ntawm txhua lub ntsiab = tus feem pua muab. Hloov cov huab hwm coj ntawm txhua lub caij mus rau moles siv cov molar loj los ntawm lub sijhawm teem sijhawm.
Tsis tas li ntawd, lub npe ntawm lub compound yog dab tsi?
Txoj Kev Tshuag ntawm Kev Sau Npe Ib ionic compound yog lub npe ua ntej los ntawm nws cov cation thiab tom qab ntawd los ntawm nws cov anion. Cov cation muaj tib yam npe raws li nws lub ntsiab. Piv txwv li, K+1 yog hu ua potassium ion, ib yam li K hu ua potassium atom.
Yuav ua li cas koj paub tias muaj pes tsawg lub ntsiab lus nyob rau hauv ib lub compound?
Yuav kom nrhiav tau qhov molar mass ntawm ib qho compound:
- Siv cov tshuaj formula los txiav txim seb tus naj npawb ntawm txhua hom atom tam sim no nyob rau hauv lub compound.
- Muab cov atomic qhov hnyav (los ntawm lub sij hawm lub sij hawm) ntawm txhua lub caij los ntawm tus naj npawb ntawm cov atoms ntawm lub ntsiab tam sim no nyob rau hauv lub compound.
Pom zoo:
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Cov mis mos molecular siv cov cim tshuaj thiab cov ntawv sau npe los qhia cov naj npawb ntawm cov atoms sib txawv hauv cov molecule lossis compound. Ib qho empirical formula muab qhov yooj yim tshaj plaws, tag nrho tus lej piv ntawm atoms hauv ib qho chaw. Cov qauv qauv qhia txog kev sib koom ua ke ntawm cov atoms hauv cov molecule