L07 Chem 151 Lecture Notes - Lecture 4: Nonmetal, Oxoacid, Weak Base
7 Oct 2016
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Bases: change litmus paper red react with carbonate to form co2 react with active (electropositive) metals to form h2 increase the concentration of h+ in soln with water. React with many metal ions to form precipitates. Increase concentration of oh- in soln with water. Neutralization an acid reacts with a base to form a salt and water. Nh3 (g) + hcl (g) -> nh4cl (g) Acid: hna where a-n is a: simple anion (i. e. in hcl) -> binary acid polyatomic anion (i. e. h2so4) -> oxoacid. Rn - ammonia or organic amine where r can be a h or alkyl group (ch 3) Nonmetal oxides dissolve in h2o to form acidic solutions these are called acid anhydrides. Metal oxides dissolve in h2o to form basic solutions base anhydrides. Most organic acids and the above with fewer oxygens. A salt solution can be acidic, basic, or neutral. The solution of a salt made from a weak base and strong acid is acidic.
