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- Consider 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.To verify Beer’s Law for solution of KMnO4 or K2Cr2O7 using colorimeter.A. (see pic) B. When an electrolyte solution (such as NaCl) is added to ice, the ions have ____ with water molecules and thus ____ the ability of the water molecules to form a solid ice structure. C. Given that water's freezing pt is 0C and the fp depression constant is 1.86 Ckg/mol, calculate the fp depression for a 3.55 molal soln (moles/kg) of NaCl in water. Assume ideal behavior of the ions. D. Given that water's fp is 0C and fp depression constant is 1.86 Ckg/mol, calculate the fp depression for 3.55 molal solution for CaCl2 in water. Assume ideal behavior of the ions.
- Please give solution in layman's termsA solution of PbCl2 has 0.018 moles of Cl- and 0.0089 moles of Pb2+. Its Ksp = 2.88x10-6 (based on molarities), and its ionic strength = 0.027. a) What are the activity coefficients of Pb2+ and Cl-? b) Use activities of ions instead of molarities to calculate a value for the thermodynamic solubility product of the solution.In beer's law, what will happen to the molar apsorptivity when the bath length increases to 2 cm. Why??
- The following evidence was obtained from an experiment to determine the solubility of calcium chloride at room temperature. A sample of saturated calcium chloride solution was evaporated to dryness, and the mass of solid residue was measured.EvidenceVolume of solution (mL) = 15.0Mass of empty beaker (g) = 90.54Mass of beaker and residue (g) = 101.36The solubility of calcium chloride is g/100 mL1.0 GRAMS of an electrolyte was dissolved in 29 grams of water, the resulting solution was found to have a molarity of 0.437 mol / L. The freezing point of the solution was determined to be -4.96°C. The freezing point depression constant for water is -1.86°C and pure water may be assumed to freeze at 0°C. If the molecular weight of the electrolyte is 179.7 g/mol and it takes 15 minutes to perform the experiment, how much water was used (grams) ?An equimolar solution of ammonium sulfate, sodium chloride, and magnesium nitrate has an ionic strength of 0.15M. What is molar concentration of the solution wiht respect to each solute? a. 0.010 b. 0.015 c. 0.020 d. 0.025
- Why is it that the ionic activity is equal to the molality (mol/kg) in DHLL (Debye-Hückel Limiting Law)?Given: molality = 0.54, pH = 2.43, Using the given equation, estimate the mean activity coefficient of HCl using the given molality and pH. ?± = mean activity coefficient of H+ and Cl- ionsb = molality relative to the standard 1 molal bo.The mean activity coefficient in an 0.050 molKg-1 LaCl3 (aq) solutions is 0.303 at 25 o C. What is the percentage error in the value predicted by the debye – Huckel limiting law?