MR - Overall Revision 4.0 / 5 based on 1 rating ? ChemistryAcids, bases and saltsBonding & shapesA2/A-levelOCR Created by: GemmaCreated on: 09-10-12 09:44 CI13.8 - Condensation Reaction - small stable molecule produced = HCL or H2O - polyester = nylon - amidie link = amine + carboxlyic acid - acyl chloride used in labs = more reactive 1 of 5 CI13.8 - Amines - Solubilty DECREASES with mass = more H bonds - Benzene rings DECREASES basicity - B.P INCREASES with mass - Lewis Bases = lone pair donors - Bronsted - Lowry Bases = proton acceptors 2 of 5 CI13.8 - Nylons Naming Nylons: - general formula - nylon - 6,6 - first number = num of C atoms in the amine - second number = num of C atoms in the carboxylic acid To make a chain = diamine + dicarboxlyic acid 3 of 5 CI13.8 - Hydrolysis Hydrolysis = polymer + water - Catalyst = acid / alkali = HCl / NaOH - Conditions = reflux - Acid = dicarboxylate salt + amine - Alkali = promated diamine + carboxlyic acid 4 of 5 CI13.8 - Nucleophile Conditions: - sealed tube - conc aqueous NH3 - heat CH3-CH2-Br + NH3 = CH3-CH2-NH3+ + Br- = NH4Br + H2N-CH2-CH3 C-Br bond = polar NH4Br = ammonium ion + Br- Base strength INCREASES as lone pair is more avaliable 5 of 5
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