CHEM 001 Lecture Notes - Lecture 5: Formula Unit, Electrolyte, Molar Concentration

• School: College of The Sequoias
• Department: Chemistry (CHEM)
• Course: CHEM 001
• Professor: Rodriguez

Document Summary

One of the most important substances on earth. A polar molecule because of its unequal charge distribution. The nature of aqueous solutions: strong and weak electrolytes nature of. Electrolyte substance that when dissolved in water produces a solution that can conduct electricity. Strong electrolytes conduct current very efficiently (bulb shines brightly). Weak electrolytes conduct only a small current (bulb glows dimly). Nonelectrolytes no current flows (bulb remains unlit). The composition of solutions chemical reactions of solutions. The amounts of chemicals present in the solutions. Molarity (m) = moles of solute per volume of solution in liters: For a 0. 25 m cacl2 solution: cacl2 ca2+ + 2cl . Ca2+: 1 0. 25 m = 0. 25 m ca2+ Notice: the solution with the greatest number of ions is not necessarily the one in which: The volume of the solution is the largest. The formula unit has the greatest number of ions.