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10.7: Chapter 10 Problems

  • Page ID
    23741
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     \( \newcommand{\Cpm}{C_{p,\text{m}}} % molar heat capacity at const.p\)
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     \( \newcommand{\mbB}{_{m,\text{B}}}       % m basis, B\)
     \( \newcommand{\kHi}{k_{\text{H},i}}      % Henry's law constant, x basis, i\)
     \( \newcommand{\kHB}{k_{\text{H,B}}}      % Henry's law constant, x basis, B\)
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     \(\newcommand{\dBar}{\mathop{}\!\mathrm{d}\hspace-.3em\raise1.05ex{\Rule{.8ex}{.125ex}{0ex}}} % inexact differential \)
     \( \newcommand{\dq}{\dBar q} % heat differential\)
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    An underlined problem number or problem-part letter indicates that the numerical answer appears in Appendix I.

    10.1
    The mean ionic activity coefficient of NaCl in a 0.100 molal aqueous solution at \(298.15\K\) has been evaluated with measurements of equilibrium cell potentials, with the result \(\ln\g_{\pm}=-0.2505\) (R. A. Robinson and R. H. Stokes, Electrolyte Solutions, 2nd edition, Butterworths, London, 1959, Table 9.3). Use this value in Eq. 10.6.9, together with the values of osmotic coefficients in Table 10.1, to evaluate \(\g_{\pm}\) at each of the molalities shown in the table; then plot \(\g_{\pm}\) as a function of \(m\B\).


    This page titled 10.7: Chapter 10 Problems is shared under a CC BY 4.0 license and was authored, remixed, and/or curated by Howard DeVoe via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request.