From each pair, select the stronger base. For each stronger base, write a structural

Wednesday, February 8th Chapter 4 - Chemical quantities and Aqueous Reactions Types of reactions : Gas Evolution, Acid, and Combustion Oxygen and Glucose are Reactants of combustion, while water and Carbon dioxide are Products. Remember the Law of Conservation of Mass - this is why we have to balance equations. When balancing equations, balance the compounds in which the elements that appear the least first. Limiting Reactants - If not stated, assume that there are infinite amount of all [other] reactants present. 1. Balance equation 2. Convert grams to moles (moles is equal to the mass divided by the molecular weight) 3. Do mole to mole conversations 4. Determine the limiting reagent (smallest amount of product formed) 5. Convert back to grams Theoretical and actual yield limiting reagent - the reagent that determines the maximum amount of theoretical yield Theoretical yield - expected yield from quantities of reactants Actual yield: The quantity of product actually produced Percent yield - actual/theoretical x 100 do exercise Friday, February 10th Molecular weights don’t factor into equations in terms of significant figures Limiting reactant exercises** Percent yield exercises* Molarity (M) or concentration (c) = Moles of solute (n)/ Volume of solution in LITERS (v) Solute - What is being dissolved Solvent - What the solute is being dissolved in Solution - Homogeneous mixture. Every solution has a solute and a solvent Solution preparation - with two liquids, the solvent is whichever liquid is in excess; if 50%-50%, whichever liq