Debye and Hückel were able to show that in dilute solutions the activity coefficient i of an ionic species i with a charge number Zi is given by logy-Az211/2 where I is the ionic strength and A is a constant. Show that the for the electrolyte Av+By- log ₁ = Az₁z. 11/2 where = mean ionic activity coefficient of the electrolyte.
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- Calculate the ionic strength of a 0.0019 m aqueous solution of MgCl2 at 298 K. 4.0.0057 X 0.00570 Check the number of significant figures. m Use the Debye-Hückel limiting law to estimate the following. (a) the activity coefficients of the Mg2+ and CI- ions in this solution 4.0 Y+ = .84 V- = 4.0 .92 (b) the mean ionic activity coefficient of these ions 4.0 .89Consider a binary solution for which the vapor pressure (in torr) of one of the components (say component 1) is given empirically by Calculate the activity and the activity coefficient of component 1 when x1 = 0.25 based on (a) a solvent standard state; (b) a solute standard state.Calculate the ionic strength of a 0.0019 m aqueous solution of MgCl2 at 298 K. 49.0057 0.00570 Check the number of significant figures. m Use the Debye-Hückel limiting law to estimate the following. (a) the activity coefficients of the Mg2+ and CI- ions in this solution Y+ = 4.0 .98 4.0 .98 (b) the mean ionic activity coefficient of these ions 4.0 10e-.0851
- For 0.002 mol kg-¹ CaCl₂ at 25 °C, use the Debye-Hückel limiting law to calculate its mean ionic activity coefficient.How can I calculate the activity coefficient and the resulting activities of a mixture of 0.001M NaCl with 0.05 NaNO2 using Debye-Hückel approximation? Is the resulting activity coefficient only for one ion species or the whole salt?Q2: Consider a binary solution for which the vapor pressure (in torr) of one of the components (say component 1) is given empirically by P₁ = 78.8x₁e (0.65x² +0.18x2) Calculate the activity and the activity coefficient of component 1 when x₁ = 0.25 based on a solvent and a solute standard state.
- Please calculate for the equilibrium or solubility constant in the problem attached below:Determine the activity coefficients and effective concentrations (activities) of Na+ and Ca2+ ions in an aqueous solution having the following composition: [Ca2+] = 3.25x 10-3 M; [Na+] = 0.96x 10-3 M; [HCO3-] = 5.75x 10-3 M; [SO42-] = 0.89x 10-3 M. (Note: Solvated ionic radii are: a(HCO3-) = a(SO42-) = 4 Å; a(Ca+) = 6 Å)A Na2SO4 electrolyte has analytical concentration of 0.3 mol kg'. Calculate ionic strength of the electrolyte. Calculate mean activity coefficient of the electrolyte. i. ii.
- The following activity data of component A have been obtained for liquid A-B solutions at 1500K. XA 0.10 0.0202 0.20 0,0564 0.30 0.1137 0.40 0.1964 0.50 0.3050 (a) Please approve that these data fit the regular solution model. (b).Please calculate G, G, AGmis, a, and ag at X = 0.3 and T = 2000K (on molar basis).Calculate the activity coefficient, y, of Co2+ when the ionic strength of the solution, μ, is 0.089 M by linear interpolation of the data in the table. Y Co²+ = Calculate the activity coefficient, y, of Co2+ when the ionic strength of the solution, μ, is 0.089 M by using the extended Debye-Hückel equation at 25 °C, where the ion size is 600 pm. Y Co²+ = Ionic strength (μ, M) 0.001 0.005 0.01 0.05 0.1 Activity coefficient (Y Co²+) 0.870 0.749 0.675 0.485 0.4052- 2.5 S.m¹ = ..... S.cm*¹. 2.5 S 3- If AmAg+= 5.0 x10 S.cm².mol 'then at infinite dilution ionic mobility of Ag* ion is ........... 4- Dissociation constant of one weak electrolyte is 1.77x105. If its Am 390.5 S.cm'mol¹, then, the molar conductance of its 0.01 M aqueous solution is ........ 5- The solution having concentration 0.01 M and molar conductivity is 19.6 S.cm².mol¹ ,then, The molar conductivity at infinite dilution at 298 K temp. dissociation constant of weak electrolyte is 2.5x105 .........