University:
Widener University
Course:
1046C | General Chemistry
Academic year:

2020
Views:

185

Pages:

2
Author:

LGarrett

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: -c = 12.01(12) = 144.012 - h = 1.008(22) = 22.176 - o = 16.000 (11) = 175.989 - 342.177 g/mol 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: -M = mol/liters - mol = M(L) - mol = (1.0M)(.100L) - 0.1 mol 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 “0.5M” 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: 34.218/2 = 17.109G Data Solubility Factor Taste Agitation Color Be Spefic sweet smooth light red 1.0 M without heat sweet and strong grainy dark red 0.5 M without heat sweet and strong smooth dark red 1.0 M with heat bittersweet grainy light red 0.5 M with heat bittersweet but more leaning to sweet smooth light red 1.0 M with stir sour and strong xtra grainy dark red 0.5 M with stir strong and sour with a hint of sweet smooth dark red 1.0 M without stir sour xtra grainy light red 0.5 M without stir bittersweet smooth light red 1.0 M with sugar sweet smooth deep dark red smooth deep dark red smooth deep dark red smooth deep dark red Control Temperature Texture 0.5 M with sugar Particle Size 1.0 M with sugar cubes 0.5 M with sugar cubes sweet