CHEM 105aLg Lecture Notes - Lecture 4: Lead, Killer Whale
Document Summary
Chapter 4 stoichiometry calculating quantities of reactants and products in a chemical reaction: based on the law of conservation of mass. 4. 2 stoichiometry calculations the amounts of any other substance in a chemical reaction can be determined from the amount just one substance. 4. 4 some definitions solution: a homogenous mixture solvent: the majority solution component, retains its state (doing the dissolving) solute: the minority solution component, becomes the state of the solvent (being dissolved) salt: any ionic compound. Molarity (m) = (moles of solute) / (liters of solution) dilution & concentration: i tis common to make dilute solutions from more concentrated ones, more is added but the amount of solute remains constant. Mol solute before solution = mol solute after dilution. Weak electrolytes: slightly ionize in water: weak acids: hc2h3o2, weak bases: nh3, hc2h3o2 (l) h+ (aq) + c2h3o2 (aq) (acetic acid is 1% ionized in water) 4. 6 three types of reactions precipitation reactions acid-base reactions oxidation-reduction reactions.
