Video: Qhov kev sib npaug twg yog qhov tsim nyog los suav cov cua sov uas tsim los ntawm HCl NaOH cov tshuaj tiv thaiv?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
xam tus naj npawb ntawm moles ntawm lub hauv paus koj ntxiv los txiav txim qhov molar kub ntawm neutralization, qhia siv lub kev sib npaug ΔH = Q ÷ n, qhov "n" yog tus lej ntawm moles. Piv txwv li, piv txwv li koj ntxiv 25 mL ntawm 1.0 M NaOH rau koj HCl rau tsim tawm a kub ntawm neutralization ntawm 447.78 Joules.
Kuj tseem paub yog, dab tsi yog qhov kub ntawm cov tshuaj tiv thaiv rau HCl thiab NaOH?
Tshwj xeeb Kub ntawm HCl & NaOH Solution = 4.017 J/g°C.
Tsis tas li ntawd, puas yog neutralization ntawm HCl thiab NaOH exothermic? Kub ntawm Neutralization : HCl (aq) + NaOH (aq) Cov tshuaj tiv thaiv ntawm HCl (aq), muaj zog acid, nrog NaOH (aq), lub hauv paus muaj zog, yog ib qho exothermic tshuaj tiv thaiv. Lub tswv yim loj rau feem ntau calorimetry themed ua qauv qhia yog lub zog txuag. Lub zog tsis tuaj yeem tsim lossis rhuav tshem, tab sis nws tuaj yeem hloov pauv.
Yog li ntawd, HCl thiab NaOH tsim dab tsi?
Piv txwv li, yog tias koj sib tov hydrochloric acid ( HCl ) nrog sodium hydroxide ( NaOH ), cov khoom tsim yog dej (H20) thiab sodium chloride (NaCl), uas yog paub zoo raws li lub rooj ntsev.
Qhov tshwj xeeb kub ntawm HCl yog dab tsi?
Tab sis nyob rau hauv feem ntau lub sij hawm uas tus solute ( HCl ) yog dilute, lub tshwj xeeb kub lub peev xwm ntawm cov kuab tshuaj (dej) tsuas yog cuam tshuam rau qhov tsawg kawg nkaus. Yog li ntawd, lub tshwj xeeb kub muaj peev xwm ntawm ib tug dilute tov ntawm HCl yog ze heev rau lub tshwj xeeb kub muaj peev xwm ntawm cov dej ntshiab (4.184 J K-1 g-1).
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