Structure and Properties of Water Compound Molecular weight Da Melting point C Boiling point C Methane 16 04 182 6 161 4 Ammonia 17 03 77 7 33 35 Water 18 02 0 100 Methanol 32 04 93 9 64 7 b b Ionic interactions F kq1q2 r 2 k 8 99 x 109 J m C2 q1 q2 charge r distance dielectric constant b Solute Hsolute Ssolute Hwater Swater Ion Chloride Hydration Spheres Sodium Solute Hsolute Ssolute Hwater Swater Hsolute Ssolute Hwater Swater Polar Solute Non polar Clathrate Hydrophobic effect V Amphipathic molecules O O Critical Micellar Concentration CMC O O P H3 C N C H3 CH3 O O O O O O 4 3 r 3 A 4 r 2 Dissociation of water H2O H OH H OH K H2O Strong Acids Weak acids H3O A K HA H2O H3O K a HA A pH pK a log HA A pH pK a log H3O A K H2O K a HA 312 4 567 012 8 9 6 A HA
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