Video: Yuav ua li cas koj xam concentration los ntawm ib tug titration nkhaus?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Faib tus naj npawb ntawm moles ntawm cov tshuaj ntsuam xyuas tam sim no los ntawm qhov qub ntim ntawm cov tshuaj ntsuam xyuas. Piv txwv, yog tias thawj qhov ntim ntawm qhov tshuaj ntsuam yog 500 mL, faib los ntawm 1000 mL rau L kom tau 0.5 L. Sib faib 0.01 moles ntawm kev tshuaj ntsuam los ntawm 0.5 L kom tau 0.02 moles ib litre. Qhov no yog qhov siab los yog molarity.
Dhau li, koj yuav xam qhov concentration ntawm titration li cas?
Siv cov titration formula . Yog tias tus neeg ua phem thiab tus neeg tshuaj xyuas muaj qhov sib piv 1: 1 mole, tus qauv yog molarity (M) ntawm cov kua qaub x ntim (V) ntawm cov kua qaub = molarity (M) ntawm lub hauv paus x ntim (V) ntawm lub hauv paus. (Molarity yog qhov siab ntawm kev daws teeb meem qhia raws li tus naj npawb ntawm moles ntawm solute ib liter ntawm kev daws.)
Kuj Paub, yog dab tsi yog cov mis rau concentration? Tus qauv qauv yog C = m/V, qhov twg C yog siab , m yog qhov loj ntawm cov kuab tshuaj yaj, thiab V yog tag nrho cov ntim ntawm cov tshuaj.
Qhov thib ob, koj yuav pom qhov sib npaug ntawm qhov nkhaus titration li cas?
Nyob ntawm nkhaus , cov qhov sib npaug nyob qhov twg daim duab yog ntxhab tshaj plaws. Muaj kev hloov pauv sai thiab sai ntawm pH nyob ib ncig ntawm qhov no taw tes , uas tuaj yeem pom los ntawm kev hloov xim hloov chaw thaum lub sijhawm titration . Ntawm sib npaug point , ib lub rooj ICE xav kom txiav txim siab ntim thiab acidity.
Koj yuav suav qhov concentration ntawm NaOH li cas?
Xam cov NaOH concentration los ntawm cov ntaub ntawv titration yog zoo nkauj ncaj stoichiometry: moles NaOH = moles acid, thiab muab faib los ntawm ntim hauv L. Ib qho piv txwv ntawm 25.0mL ntawm 0.105mol L-1 NaOH thiab piv txwv ntawm 50.0mL ntawm 0.240mol L-1 NaOH yog tov, thiab cov tshuaj yog tsim los ntawm 100.00mL los ntawm kev ntxiv dej txaus.
Pom zoo:
4 yam nkhaus nkhaus ntawm tus nqaj qaum yog dab tsi?
Cov pob txha no, hu ua vertebrae, tau muab faib ua tsib thaj chaw: ncauj tsev menyuam, thoracic, lumbar, sacral, thiab coccyx. Txawm hais tias tus nqaj qaum ua rau peb sawv ntsug ncaj, tus qauv yog dab tsi tab sis. Muaj tiag peb qhov nkhaus nkhaus ntawm tus nqaj qaum (plaub yog tias koj suav tus pob tw)
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