92168.pdf

(Brent) #1
Answers 289


  1. C (inner part of double layer) = 0.106 F m~^2
    6/eo (inner part of double layer) = 4.8 (suggesting orientation of
    water molecules close to the surface)

  2. (a) ME = 1-5 x 10~^8 m^2 s"^1 V"^1
    (6) 3.3 per cent
    (c) 19.2 mV (using Smoluchowski equation; KU ** 260)
    (</) 0.014 Cm"^2

  3. g — 51 mV (using Smoluchowski equation; KO «* 140; therefore,
    calculated £ is probably an underestimate)

  4. 5 x 10~^5 cm^3 s"^1 towards — ve electrode

  5. H/nm 0.5 2 5 10 20
    V/1<T^21 J -73 +62 +12 -10 -8

  6. k 2 = 4.8 x 10"^12 cm^3 s"^1
    = 6.2 x 10~^12 cm^3 s'^1


35: Mr = 118000
MT (light-scattering, mass-average) > Mr (viscosity) > Mr
(osmotic pressure, number-average)



  1. [17] = 1.6 x 10~^5 M°Tm m^3 kg'^1
    Average polymer configuration intermediate between extended
    and random

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