University:
Hunter College CUNY
Course:
CHEM 106 | General Chemistry Laboratory
Academic year:

2022
Views:

108

Pages:

2
Author:

grosikesf4

Prelab: Define each of the following terms: Solvent Aqueous Solution containing water, usually solvent Saturated Solution Solute thing that is dissolved in solvent Describe how to make a solution of 10 grams of salt in 100 grams of water. Include three methods to make the solution with as little time as possible. What is molarity? Include the formula. no more solvent can be dissolved Unsaturated Solution dissolve it in the water, heat the water and put the salt in, or (i dont know) molarity is the concentration of a solution A sample has 0.2 moles of salt dissolved in 2 L of solution. What is the molarity? Activity: Click on the play button to run the simulation; click on < show values= to display all numeric values and explore the simulation. 1. For each solute determine if the solution is saturated or unsaturated at a 1 Molar solution Solute Saturated or Solute Saturated or Solute unsaturated unsaturated Drink mix Potassium Nickel (II) dichromate Chloride Cobalt(II) Gold Copper Sulfide (III)chloride nitrate Cobalt chloride Potassium Potassium chromate permanganate Saturated or unsaturated Question: During the simulation, what indicates that the solution is saturated? Which of these indicators would also be present in the real world? Solids at the bottom, or residue of the solute. That would also be present in the real world. 2. Determine the molarity at which each solute reaches the point of saturation. This is the HIGHEST molarity the solution will reach and remain unsaturated. Solute Saturation Solute Saturation Solute Saturation Point Point Point Drink mix XXX Potassium Nickel (II) XXX dichromate Chloride Cobalt(II) XXX Gold Copper Sulfide (III)chloride nitrate Cobalt chloride Potassium Potassium chromate permanganate Follow Up Questions: If you change the solute amount but keep the solution volume the same what happens to the Molarity? If you change the solution volume but keep the solute amount the same what happens to the Molarity? What is the relationship between solute amount and Molarity? The molarity changes along with it. The molarity goes in the opposite direction of the solution. The more solute, the higher molarity. The lower the solute, the lower the molarity What is the relationship between solution volume and Molarity? The more solution, the less molarity. The less solution, the more molarity Describe the process needed to make a saturated solution unsaturated. You heat it without adding any more solvent.