Cov tshuaj tiv thaiv Zn h2so4 ZnSO4 h2 yog dab tsi?
Cov tshuaj tiv thaiv Zn h2so4 ZnSO4 h2 yog dab tsi?

Video: Cov tshuaj tiv thaiv Zn h2so4 ZnSO4 h2 yog dab tsi?

Video: Cov tshuaj tiv thaiv Zn h2so4 ZnSO4 h2 yog dab tsi?
Video: Hóa 8 # Ôn tập Oxy, Hydro, Nước (O2, H2, H2O) 2024, Kaum ib hlis
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3. SINGLE REPLACEMENT (tseem hu ua DISPLACEMENT): General form: A + BC → AC + B ("A displaces B") Piv txwv: Zn + H2SO4 → ZnSO4 + H2 Mg + 2 AgNO3 → Mg(NO3)2+ 2 Ag In cov no, cov ntsiab lus "ntau dua reactive" hloov qhov "tsawg reactive" ib qho los ntawm ib qho chaw. Cov tshuaj tiv thaiv ib txwm muaj oxidation thiab txo qis.

Xav txog qhov no, yuav ua li cas thaum Zn tshwm sim nrog h2so4?

Cov zinc yuav teb nrog sulfuric acidforming zinc sulphate yaj nyob rau hauv cov kua thiab tso tawm hydrogen gas. Thaum peb muab lub raj kuaj uas muaj zinc andsulfuric acid nyob ze ntawm lub tswm ciab lossis lub qhov cub, peb hnov lub suab nrov. Qhov no qhia tau tias muaj hydrogen.

Qhov thib ob, qhov sib npaug ntawm Zn HCl ZnCl2 h2 yog dab tsi? Cov tshuaj tiv thaiv ntawm zinc thiab HCl yog muab los ntawm lub cim sib zn + HCl → ZnCl2 + H2.

Tom qab ntawd, ib tug kuj yuav nug, hom tshuaj tiv thaiv yog zinc thiab sulfuric acid?

Zinc reacts nrog dilute sulfuric acid toform zinc sulphate thiab hydrogen gas yog hloov zuj zus. Qhov no yog asingle displacement tshuaj tiv thaiv ntawm ib tug tsis-hlau los ntawm ib tug hlau. Theproducts ZnSO4 thiab H2 (g) yog qhov sib txawv ntawm cov tshuaj muaj pes tsawg leeg thiab cov khoom siv tshuaj lom neeg los ntawm cov khoom siv Zn thiab H2YOG4.

Puas yog Zn teb nrog h2so4?

Zinc reacts nrog sulfuric acid tsim hydrogen. Cov tshuaj tiv thaiv yog catalysed los ntawm tooj liab. Tus nqi ntawm tshuaj tiv thaiv tuaj yeem muab piv los ntawm tus nqi ntawm kev tsim cov pa roj hydrogen npuas. Qhov no yog qhov kev sim sai thiab yooj yim uas tuaj yeem ua rau tus kheej lossis ua khub.

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