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Solubility Lab Report Assignment

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Added on  2020-05-16

Solubility Lab Report Assignment

   Added on 2020-05-16

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SOLUBILITY 1Laboratory ReportNameName of the ClassInstructorInstitutionCity and StateDate
Solubility Lab Report Assignment_1
SOLUBILITY 2AbstractThis report uses five drops of deionised water and 5 drops of calcium hydroxide solution from the proceeding wells (1-12) to determine its solubility and the formation of a precipitate (an insoluble salt).The results show that a precipitate is formed in the first wells as the concentration continues to decrease moving from left to right due to dilution of the solution. Ultimately, it can be concluded that the concentration of a product or a solution continues to decrease with dilution with water.IntroductionCalcium hydroxide or lime is solid that is partially soluble in water. It dissolves in water to give calcium hydroxide solution that dissociates to form Ca and OH ions (Rojas 2014, p.255).When dissolved in water, Ca(OH)2 reaches a saturation point or equilibrium. However, the equilibrium constant is referred to as solubility constant and is expressed by Ksp (Bullard & Flatt, 2010). Therefore the Ksp of dissolving lime is water is = [Ca2+ (aq)][OH- (aq)]2. The rationale of this report is to calculate the solubility constant of lime when dissolved in water and when mixed with a soluble salt.Materials usedDropperWell plates, 12Deionised water0.1M Ca(No3)20.1M NaOHDust coat & Eyeglasses for protectionMethodology
Solubility Lab Report Assignment_2
SOLUBILITY 3Step 11.For the first experiment, 5 drops of calcium nitrate solution were put in well 1, and 5 drops of deionised water each in the reaming wells2.5 drops of the solution were added in well 2 and the solution mixed with a dropper.3.A dropper was used to add 5 drops of the mixture in well 2 to well 3 and the mixture mixed. Continue the serial dilution until to the last well. The concentration was then calculated.Step 21.5 drops of 0.1M NaOH were put in the 12 wells. An empty dropper was used to mix each of the solutionsStep 31.3-4 minutes were allowed for the precipitates to form and the patterns of the precipitation observed.2.The concentration of ions in the well was calculated and the solution used to determine the solubility product of lime.Results 2. Lime or calcium hydroxide dissolves in water as shown as shown below Ca(OH) 2 (s) ⇌ Ca2+ (aq) + 2OH- (aq)3. Solubility product constant expression of calcium hydroxideKsp = [Ca2+ (aq)] [OH- (aq)]24. Calculate Ksp , we need molarity of OH- and Ca2+Since the molarity of Ca(OH)2 is 0.05M, we can use the mole ratio to find the molarity of combining ionsMole ratio Ca(OH)2 : Ca2+ is 1:1 and
Solubility Lab Report Assignment_3

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