126. Solving a chemistry problem
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Product description
Using the data given for various options (Table 8):
- Build a surface tension isotherm and find the surface activity of the substance on the graph.
- Find the negative derivatives –db/dС for concentrations whose b values do not lie on the tangent drawn to the initial section of the isotherm.
- Having determined the negative derivatives –db/dС, calculate the Gibbs adsorption for these derivatives.
- Calculate the S/G ratios for all values of G and plot S/G versus S. Using the linear portion of the last plot, find the constant of the Langmuir equation.
- Calculate the area occupied by an acid molecule in the surface layer S0.
Option 4
Solute Butyric acid
С•10–3 mol/m3 0 0.06 0.16 1.50 2.50 3.50 5.50
b•103 J/m2 71.96 70.28 67.75 49.64 42.35 37.07 29.51
V, J/m2 0.0194
Additional information
a solution in Word format.