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Category > Chemistry Posted 27 Apr 2017 My Price 13.00

Lab 3: Determining the value of an Equilibrium constant

Lab 3: Determining the value of an Equilibrium constant
Purpose:
Using a titration, to experimentally determine the ksp of calcium hydroxide.
Procedure:
1. Prepare an equilibrium mixture of calcium hydroxide by adding solid to distilled
water, allow mixture to settle.
2. Remove 10 mL of the ions mixture being careful not to disturb the solid and transfer
into an Erlenmeyer flask, repeat for trials 2 and 3.
3. Add 1-2 drops of phenolphthalein
4. Using the 0.1M hydrochloric acid, titrate the ions mixture until the pink colour
disappears.
5. Record the volume of acid required to titrate and repeat for trials 2 and 3.
Calculations: Find hydroxide concentration using titration
Link: https://www.youtube.com/watch?v=0N174A4Hhcs Ali 2
Data Table: Requirements:
1. Completed data tables
2. Sample calculations for finding ksp of Calcium hydroxide experimentally
3. The accepted value for the ksp of calcium hydroxide is 5 x 10 -6, calculate the percent
difference between the accepted value and your experimental value.
4. Identify sources of error and uncertainty in the experimental design and provide
some suggestions for improvement
5. Conclusion?

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SuperTutor
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Status NEW Posted 27 Apr 2017 02:04 AM My Price 13.00

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