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XY ((Sample 1:ph=1 Sulfuric acid, Sample 2: ph=12.5 calcium hydroxide,…

- - - - When mixing the acid with the base, there was a reaction where a precipitate was formed. The pH of the base that was mixed was above 12, and the acid had a ph of one. The reaction showed the physical characteristics of calcium sulfate with a cloudy precipitate and a transparent liquid. The ph was neutralized.
    - - When mixing the substance Lead Nitrate with the unknown acid. It is possible to prove sulfuric acid due to the reaction which happens. Through double displacement,a new acid is form and an insoluble salt PbSO4. Some sort of white precipitate is formed and a change colour a key characteristic from this reaction.
    - - This double displacement reaction has no colour change since it only forms and white precipitate in the midst of the acid. A characteristic from this reaction.
- - - - H^+ + OH^- → H2O (water)
        
        Is water
      - Ca^2+ + PO4^3- → Ca3(PO4)2 (calcium phosphate)
        
        Insoluble in water
        
        Pb^2+ + CO3^2- → PbCO3 (lead carbonate)
        
        Ca^2+CO3^2- → CaCO3 (Calcium Carbonate)
        
        Pb^2+ + SO4^2- → PbSO4 (lead sulfate)
        
        Pb^2+ + PO4^3- → Pb3(PO4)2 (lead phosphate)
        
        Pb3(PO4)2 (s) + 3H2SO4 (aq) → 2H3PO4 (aq) + 3PbSO4 (s) + 3H2O (l)
        (Double Displacement) generates water and precipitation
        
        3PbCO3 (s) + 2HPO4^2- (aq) + 3H2O (l) → 2H3PO4 (aq) + 3PbSO4 (s) + 3H2O (l) (Double Displacement reaction)
        
        Pb3(PO4)2 + 2 H3PO4 → 6 HPO4^2- + 3 Pb^2+ (Double Displacement reaction) Insoluble in water
        
        Pb3(PO4)2 + 3HCO3- → 3PbCO3 + 2HPO42- + H2O (Double Displacement) it release water in the reaction
        
        Pb3(PO4)2 (aq) + 6 Pb(OH)2 (aq) → 3 Pb2(PO4)3 (s) + 6 H2O (l)
        Double Displacement Reaction
        
        Ca^2+SO4^2- → CaSO4^2- (Calcium Sulfate)
        
        Slightly Soluble
        
        CaSO4 + H2SO4 → CaSO4·1/2H2O + H2O (Neutralization Reaction) produces some sort of white powder.
        
        2Ag^+ + SO4^2- → Ag2SO4 (Silver Sulfate)
        
        Ag2SO4 + Ca(OH)2 → 2AgOH + CaSO4 (Double Displacement reaction) creates a yellowish brown precipitate that soluble in water. While calcium sulfate is white
        
        Ag2SO4 + PbSO4 →
        
        3Ag^+ + PO4^3- → Ag3PO4 (Silver Phosphate
        
        Ag^+ + CO3^2- → Ag2CO3 (Silver Carbonate)
  - - - H^+ + SO4^2- → H2SO4 (sulfuric acid)
        
        Soluble in water
        
        Ca(OH)2 + H2SO4 → CaSO4 + 2H2O (double displacement reaction) Creates a white precipitate
      - H^+ + PO4^3- → H3PO4 (phosphoric acid)
        
        Soluble in water
      - H^+ + CO3^2- → H2CO3 (Bicarbonate)
        
        HCO3- + AgOH → AgCO3 + H2O (Double displacement reaction) Silver carbonate is a white solid and water is clear.
  - - - Soluble in water
    - - Slightly Soluble in water
      - 2AgOH + H2SO4 → Ag2SO4 + 2H2O (double displacement) a cloudy solid white liquid silver sulfate
    - - 3H3PO4 + Pb(OH)2 → Pb3(PO4)2 + 6H2O (Double Displacement reaction)
      - Non Soluble in water