Identify the unknown compounds (1-6) as Al(NO3)3, AgNO3, Ba(NO3)2, Ca(NO3)2, CuSO4, or Zn(NO3)2 ### Identification of Unknown Solutions from Precipitation ReactionsYou are given six numbered test tubes, labeled 1 through 6. Each test tube contains 0.1 M solutions of the following compounds:- Al(NO₃)₃ - Ca(NO₃)₂ - AgNO₃ - CuSO₄ - Ba(NO₃)₂ - Zn(NO₃)₂ The unknown solutions are tested with the following reagents:- 6 M NaOH- 6 M H₂SO₄- 6 M HCl- 6 M NH₄OH### ProcedureFor each trial, combine 5 drops of the unknown solution with 2 drops of the reagent in a well plate. Record the results in terms of precipitate formation and solution color changes to identify each unknown solution.### Observation Table| Reagent | Unknown 1 | Unknown 2 | Unknown 3 | Unknown 4 | Unknown 5 | Unknown 6 ||---------|------------------|-----------------------------------------------|------------------------|-------------------------|-----------------------------------------------|-------------------|| **NaOH** | white precipitate | white precipitate forms then dissolves, forms colorless solution | bluish-white precipitate | white precipitate slowly forms | white precipitate forms then dissolves, forms colorless solution | dark brown precipitate || **HCl** | white precipitate slowly forms | no reaction | bluish-green solution | no reaction | no reaction | white precipitate || **H₂SO₄** | no reaction | no reaction | blue solution | white precipitate | no reaction | no reaction || **NH₄OH** | white precipitate | white precipitate forms then dissolves, forms colorless solution | bluish-white precipitate then dissolves, forms dark blue solution | no reaction | white precipitate | brown precipitate |### Analysis- **Unknown 1** reacts with NaOH and NH₄OH to form a white precipitate, and slowly forms a precipitate with HCl, indicating likely cations such as Al³⁺.- **Unknown 2** appears to be soluble upon adding NaOH and NH₄OH, pointing towards Ca²⁺ or similar cations that dissolve in excess reagent.- **Unknown 3

The data from the test are given below :Unknown 1 : It forms white solid precipitate when reacted with NaOH. Thus, out of the given compounds, the compound would be calcium nitrate Ca(NO3)2. Ca(NO3)2(aq) + 2NaOH(aq) → Ca(OH)2(s) + 2NaNO3(aq) white ppt Unknown 2 : It forms white solid precipitate when reacted with NH4OH which dissolves and forms a colorless solution. Thus, out of the given compounds, the compound would be zinc nitrate Zn(NO3)2. Zn2+(aq) + 2NH4OH(aq) → Zn(OH)2(s) + 2NH4+(aq) white pptZn(OH)2 + 4NH3 → [Zn(NH3)4]2+ + 2OH-Unknown 3 : It forms bluish white precipitate when reacted with NaOH. Thus, out of the given compounds, the compound would be copper sulfate CuSO4. CuSO4(aq) + 2NaOH(aq) → Cu(OH)2(s) + Na2SO4(aq) bluish white ppt Unknown 4 : It forms white precipitate when reacted with H2SO4. Thus, out of the given compounds, the compound would be barium nitrate Ba(NO3)2. Ba(NO3)2(aq) + H2SO4(aq) → BaSO4(s) + 2HNO3(aq) white pptUnknown 5 : It forms white precipitate when reacted with NH4OH. Thus, out of the given compounds, the compound would be aluminum nitrate Al(NO3)3. Al(NO3)3(aq) + 3NH4OH(aq) → Al(OH)3(s) + 3NH4NO3(aq) white ppt Unknown 6 : It forms dark white precipitate when reacted with HCl. Thus, out of the given compounds, the compound would be silver nitrate AgNO3. AgNO3(aq) + HCl(aq) → AgCl(s) + HNO3(aq) white ppt