CHEM 1202 : Bonus Final Solutions
Document Summary
A very large equilibrium constant k 1, means the equilibrium favors (produces more) products. At equilibrium the amounts of the reactants and products stop changing. The rates of the forward and reverse reactions are equal. Solution: in ch4 the c - h bond is not polar because h and c have very similar electronegativities. So that hydrogen is not acidic: na is a negligibly weak acid. All alkali metal cations are negligibly weak acids. You should remember that: hc o4, hc o3, hbro3 are similar molecules. The acidic proton is bound to o in every case. What makes the difference here is how positive the h atom is. The molecule with the more electronegative atoms will have the most positive h atom and this will be the strongest acid. Hc o4 is the strongest acid because it has the most o atoms and o is a very electronegative atom. A positive enthalpy of reaction hrxn cools off the surroundings.
