Reference no: EM13180782
Measure 0.2003 g of KHP and place it in a clean, dry 100-mL beaker, and then dissolve the KHP in about 25 mL of water and add a couple of drops of phenolphthalein indicator. You titrate this with your NaOH(aq) solution and find that the titration requires 9.76 mL of NaOH(aq).
1. What is the concentration of your NaOH(aq) solution?
2. You will then make a Kool-Aid solution by dissolving the powder in an entire packet of lemon-lime Kool-Aid in 250.00 mL solution. You find the powder in a packet of lemon-lime Kool-Aid has a mass of 3.629 g.
In Part 2 of the lab you titrate 5.00 mL of the lemon-lime Kool-Aid (with 5 drops of thymol blue indicator) with your NaOH(aq) solution. The titration requires 10.80 mL of NaOH(aq).
Determine the number of moles of NaOH(aq) required to titrate 5.00 mL of your Kool-Aid solution.
3. Determine the number of moles of NaOH(aq) that would be required to titrate 250.00 mL of your Kool-Aid solution (the entire packet).
4. In Part 3 of the lab you titrate 25.00 mL of the lemon-lime Kool-Aid (with KI, HCl, and starch) with 0.001000 M KIO3(aq) solution. The titration requires 10.56 mL of KIO3(aq).
Determine the number of moles of ascorbic acid in 25.00 mL of your Kool-Aid solution.
5. Determine the number of moles of ascorbic acid in 250.00 mL of your Kool-Aid solution (the entire packet).
6. If you titrated the entire packet of Kool-Aid, how many moles of NaOH(aq) would be neutralized in the titration due to the ascorbic acid?
7. To titrate the entire packet of Kool-Aid, how many moles of NaOH(aq) would be neutralized in the titration due to the citric acid?
8. Determine the number of moles of citric acid in the packet of Kool-Aid solution.
9. Determine the mass (in mg) of ascorbic acid (C6H8O6) in your packet of lemon-lime Kool-Aid.
10. Determine the mass (in g) of citric acid (C6H8O7) in your packet of lemon-lime Kool-Aid.
11. Determine the % by mass ascorbic acid in lemon-lime Kool-Aid.
12. Determine the % by mass citric acid in lemon-lime Kool-Aid.
13. Each packet of Kool-Aid contains 8 servings. Consider 8 to be an exact number.
Determine the mass (in mg) of ascorbic acid (C6H8O6) in one serving of lemon-lime Kool-Aid.
14. Determine the mass (in g) of citric acid (C6H8O7) in one serving of lemon-lime Kool-Aid.
15. The recommended dietary allowance (RDA) for ascorbic acid (vitamin C) is 70 mg. Consider 70 mg to be an exact number.
What percent of RDA for ascorbic acid (C6H8O6) is in one serving of lemon-lime Kool-Aid?
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: You will then make a Kool-Aid solution by dissolving the powder in an entire packet of lemon-lime Kool-Aid in 250.00 mL solution. You find the powder in a packet of lemon-lime Kool-Aid has a mass of 3.629 g.
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