Solubility of Inorganic Salts

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Experiment 2 - Solubility of Inorganic Salts Beginning Questions 1. Which Cation/Anion Sources will dissociate in solution? 2. Is there a set soluble and insoluble or is there an in between? 3. Why are some ions more attracted to water molecules than to each other in solution than other ions? 4. What is the trend of forming a precipitate? Safety Considerations Wear proper PPE: gloves, goggles, covered legs and feet. Dispose of the solutions in a proper hazardous waste container and not in sink. Clean the well plate with water before and after the experiment. Hazardous chemicals: Cu(NO3)2 and Ba(NO3)3 are heavy metals and should not be disposed off in the city water system. Procedure: 1) Washed and rinsed the well plate obtained from the lab stock room 2) Two drops of the anion source Na2SO4 were placed in the nine wells of the first row of well plate 3) Two drops of the anion source Na2CO3 were placed in the nine wells of the second row of well plate 4) Two drops of each of the nine Cation sources were place in the first and second rows where the anion sources were placed earlier 5) The contents of all the cells were observed and recorded in the lab notebook using the five descriptions: Clear, Cloudy, Opaque, Colorless and Colored. The recordings are described in table 2.1 6) Two other groups have also recorded with 2 sets of anions and all the nine Cations. Their recordings are also noted in the table 2.1 7) The procedure was repeated the first time using the same Cation Sources but with different anion sources salts. 8) The procedure was repeated the second time using the same Anion Sources from the first section but with different Cation sources salts. Data/Observation/Calculation/Graphs | NH4NO3 | KNO3 | AgNO3 | Ba(NO3)3 | Ca(NO3)2 | Mg(NO3) 2 | Al(NO3) 3 | Ni(NO3) 2 | Zn(NO3) 2 | NaCl | CC | CC | WO | CC | CC | CC
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