CHM 11600 Lecture Notes - Lecture 11: Lithium Hydroxide, Potassium Hydroxide, Acid Strength
6 Apr 2015
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Chm 11600 - general chemistry - lecture 11_acids and bases. Hcl(g) + h2o(l) h3o+(aq) + cl-(aq) (hcl has donated a proton to the water molecule) Acids create h3o+ when dissolved in water. Hcl(g) + h2o(l) h3o+(aq) + cl-(aq) 4 (nh3 has accepted a proton from a water molecule; note that b-l bases do not necessarily need to contain a hydroxide group arrhenius bases do) Bases create oh- when dissolved in water. For an arrhenius or bronsted-lowry acid in water, we can define a specific type of reaction, the ka reaction type . Strong acid = large ka = dissociates completely into ions in water. Weak acid = small ka = dissociates slightly into ions in water. Sometimes it can be hard to determine what acid-base reaction is happening. As a starting point, the best acid reacts with the best base. Compounds that dissociate completely: both halves are major species: Soluble salts, like nacl: ms = na+ and cl .
