CHEM 001 Lecture Notes - Lecture 5: Limiting Reagent, Ionic Compound, Stoichiometry

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

Document Summary

Sometimes all reactants are completely consumed; sometimes one or more is in excess. A limiting reactant is consumed first, preventing further product formation. Always determine limiting reactant for stoichiometry problems. Solvent - the majority solution component, retains its state. Solute - the minority solution component, becomes the state of the solvent. Always put amount of solute (usually in grams) in numerator and volume of solution (l, ml) in denominator. It is common to make dilute solutions from more concentrated ones (stock solutions) For dilutions: more solvent is added but the amount of solute remains constant. Moles solute before dilution = moles solute after dilution. Acid - produces h+ ions in water. Base - produces oh- ions in water. Acid base reaction soften have the format: acid + base = water + salt. Titration - analysis of the amount of a substance by reaction with a solution of known concentration. Mole ratio: moles acid / moles base or vice versa.