CHEM 101 Lecture Notes - Lecture 4: Equivalence Point, Barium Hydroxide, Limiting Reagent
Document Summary
Ab + cd > ac + bd. Strong electrolytes neutralize each other to form water. If you don"t do this, game over. Calculate the amount of precipitate formed from each of the reactants. Whichever produces less precipitate is the lr. Convert from moles of precipitate (the smaller value from the lr) to grams using molar mass of the precipitate. For chem 101, we will only use strong acids and strong bases. We can assume they ionize completely in water. The ep always occurs when mol h+ = mol oh-, but this can sometimes occur with a non 1:1 ratio of reactants. The ep will occur when there is a 2:1 ratio because there is twice as much oh- per ba(oh)2 as there is h+ per hcl. 1) find mol product generated from each reactant. 2) find mol h+ and mol oh- delivered by each reactant. The one that delivers less is the limiting reactant.
