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Explain why the activity coefficient for a neutral molecule is usually 1.
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- Estimate the mean ionic activity coefficient and activity of a solution that is 0.015 mol kg-1 MgF2(aq) and 0.025 mol kg-1 NaCI(aq).Estimate the mean ionic activity coefficient of NaCl in a solution that is 0.020 mol kg−1 NaCl(aq) and 0.035 mol kg−1 Ca(NO3)2(aq) at 25 °C.The mean ionic activity coefficient for 0.1 M H2SO4 is 0.265. Calculate the activity of H2SO4
- Estimate the mean ionic activity coefficient of CaCl2 in a solution that is 0.010 mol kg−1 CaCl2(aq) and 0.030 mol kg−1 NaF(aq) at 25 °C.The mean activity coefficient of a 0.2 b Mg (NO3)2 solution is 0.13 at 25oC. Calculate the mean molality, the mean ionic activity and the activity of the compound.Calculate ionic strength and mean ionic activity coefficient of a 0.03 molal aqueous solution of sodium sulphate, Na2SO4.
- The mean activity coefficient of a 0.010 m H2SO4 solution is 0.544. What is its mean activity?What Is The Activity Coefficient Of Benzoate Ion (C7H5O2-) With An Ionic Size Parameter Of a = 0.60 nm For 0.50 M Sodium Sulfate Solution?Using simple Debye-Huckel equation, estimate the following activity coefficients: SO42- at µ = 0.025
- Explain how preconcentration of cations with an ion exchanger works. Why must the concentrated acid eluent be very pure?The density of an aqueous solution increases as solutes such as salts are added. What bearing might this have on predicting whether the aqueous solution will be on the top or on the bottom for an extraction?Calculate the ionic strength of a solution that is 0.15 mol kg-1 in KCI(aq) and 0.30 mol kg-1 in CuSO4(aq)