CEM 151 Chapter Notes - Chapter 4: Stoichiometry, Electrolyte, Molar Concentration
Document Summary
Solution:a homogeneous mixture of two or more pure substances. Solvent: the substance in greater quantity (the substance dissolves the solute) Solute:the substance in lesser amount (the substance that is dissolved) Aqueous solution: water is the dissolving medium or solvent. Solvation: when an ionic substance dissolves in water, the solvent pulls the individual ions from the crystal and solvates them. Special categories of electrolytes: acids, bases, and salts. The arrhenius definition: acids are substances that ionize in aqueous solutions to increase hydrogen ion concentration. Strong acids: completely dissociate into anion and h+ All aqueous solutions can be classified in terms of whether or not they conduct electricity. Electrolyte: a substance whose aqueous solution contains ions and conducts electricity. Nonelectrolyte:any substance whose aqueous solution does not contain any ions, and therefore does not conduct electricity. Aqueous solutions of strong electrolytes conduct electricity well. Exist in aqueous solution completely or almost completely as ions.
