Cho pthh zn + hno3 → zn(no3)2 + nh4no3 + h2o tổng hệ số của phương trình là

This is an oxidation-reduction (redox) reaction:

4 Zn0 - 8 e- → 4 ZnII (oxidation)

NV + 8 e- → N-III (reduction)

Zn is a reducing agent, HNO3 is an oxidizing agent.

Reactants:

• Zn
  • Names: Zinc
    
    , Zinc powder (pyrophoric)
    
    , Zn
    Element 30
    , 30Zn
    , Cinc
    , Zink
    , Zn(ii)
    , Zn2+
    , Zincum
    , Blue powder
    , Merrillite
  • Appearance: Grey-to-blue powder
• HNO3 – Nitric acid
  
  
  • Other names: Aqua fortis
    , Spirit of niter
    , Eau forte
    Hydrogen nitrate
    , Acidum nitricum
    , Nitric acid (> 70% in water)
    , Fuming nitric acid
    , Engravers acid
    , HONO2
    , Red fuming nitric acid
    , RFNA
    , White fuming nitric acid (WFNA)
  • Appearance: Colorless, yellow or red fuming liquid
    ; Colourless-to-yellow liquid with pungent odour
    ; Colorless, yellow, or red, fuming liquid with an acrid, suffocating odor. [Note: Often used in an aqueous solution. Fuming nitric acid is concentrated nitric acid that contains dissolved nitrogen dioxide.]

Products:

• Zn(NO3)2 – Zinc nitrate
  • Other names: Zinc dinitrate
    , Zinc(II) nitrate
    , Nitric acid, zinc salt
  • Appearance: Colorless, deliquescent crystals
    ; Colourless crystals or powder
• NH4NO3 – Ammonium nitrate
  • Other names: Nitric acid, ammonium salt
  • Appearance: White/grey solid
    ; Colourless-to-white hygroscopic solid in various forms
• H2O – Water, oxidane
  • Other names: Water (H2O)
    , Hydrogen hydroxide (HH or HOH)
    , Hydrogen oxide
    Dihydrogen monoxide (DHMO) (systematic name)
    , Hydrogen monoxide
    , Dihydrogen oxide
    , Hydric acid
    , Hydrohydroxic acid
    , Hydroxic acid
    , Hydrol
    , Μ-oxido dihydrogen
    , Κ1-hydroxyl hydrogen(0)
  • Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas

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