Solute and Solvent The solvent is the substance

Solute and Solvent • The solvent is the substance in which the solute is dissolved. This is the primary ingredient in a solution. • The solute is the substance that is dissolved in the solvent.

Solute and Solvent • Water is the universal solvent. • If ever there is a solution that is water and another compound, then the solvent is always water. • When water is the solvent, it is an aqueous solution.

Concentration • The concentration of a solution is the amount of a particular substance in a given quantity of solution. • It expresses the ratio of solute to solvent

Stoichiometry Review • To convert from grams to moles: • To convert from moles to grams:

Molarity • Molarity is a concentration unit of a solution expressed as moles of solute dissolved per liter of solution.

Class Example • I have 72 g of HCl that I dissolved in 4 L of solution. What is the concentration of this final solution?

Table Talk • In order to torture this gummy bear you need you make a solution of KCl. O 3 you dissolve 1, 220 g of KCl. O 3 in 1 L of water. What is the molarity of your final solution?

Hold Up! We Can Work in Reverse • We can work backwards if we have a molarity and volume of solution. • From this we can determine both the Molarity of moles and mass of our solute the solution Molar Mass of solute

Class Example • If you have a 3 L of a 0. 6 M solution of Ag. NO 3, then what mass of Ag. NO 3 is contained in this solution?

Stop and Jot • If all the water in 430 m. L of a 0. 45 M Na. Cl solution evaporates, what mass of Na. Cl remains?