8.03 Solutions Lab 

Complete all sections of this report and answer all questions in complete sentences for full credit. Use the 8.03 hands-on lab procedure to perform the hands-on activity. Use the grading rubric before you begin.  

Click here to watch the lab completion video. We show the entire hands-on lab (so you can record the data and you won’t need the materials) and explain the pre-lab, conclusion, and post-lab.

Solutions Pre-Lab Questions

Complete the pre-lab questions to get the values you need for your drink solutions.

1.      Calculate the molar mass of the powdered fruit drink mix, made from sucrose (C12H22O11).

Answer:

2.      Determine the mass of the powdered drink mix needed to make a 1.0 M solution of 100 mL.

Hint: Molarity = ? moles solute

                               ? L solution

We will use this formula to find the moles of the drink mix. Don’t forget to convert mL to L. Then, we convert moles to grams using the molar mass found in #1.

Answer:

3.      What mass of powdered drink mix is needed to make a 0.5 M solution of 100 mL?

Hint: Molarity =  ? moles solute

                               ? L solution

This is the same process as #2, but with a “0.5 M” solution. We will use this formula to find the moles of the drink mix. Don’t forget to convert mL to L. Then, we convert moles to grams using the molar mass found in #1.

Answer:

Data

Post-Lab Connection Questions

Answer questions in complete sentences and show work.

1. If you were working for a beverage company, which molarity would you recommend, and what directions for mixing would you create for the drink package? Support your claims using the data you collected.   (HINT: Include the Molarity (1.0M or 0.5M)   then include the directions (which solubility factor?)

Answer:

2. How would you do it if you needed to make 100 mL of a 0.2 M fruit drink solution from the 1.0 M fruit drink solution? (Hint: Use MsVs = MdVd to find the concentrated solution, then add water to reach 100 mL.) Show your work.

Answer: