P14C.2 The surface tensions of a series of aqueous solutions of a surfactant A were measured at 20°C, with the following results: [A]/(mol dm³) 0.10 0.20 0.30 0.40 0.50 W(mN m') 72.8 70.2 67.7 65.1 62.8 59.8 Calculate the surface excess concentration.

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P14C.2 The surface tensions of a series of aqueous solutions of a surfactant A
were measured at 20°C, with the following results:
[A]/(mol dm³)
0.10
0.20
0.30
0.40
0.50
W(mN m')
72.8
70.2
67.7
65.1
62.8
59.8
Calculate the surface excess concentration.
Transcribed Image Text:P14C.2 The surface tensions of a series of aqueous solutions of a surfactant A were measured at 20°C, with the following results: [A]/(mol dm³) 0.10 0.20 0.30 0.40 0.50 W(mN m') 72.8 70.2 67.7 65.1 62.8 59.8 Calculate the surface excess concentration.
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