QUESTIOΝ1 a) Calculate ionic strength (Im) and mean activity coefficient (Y+) for a 0.050 m solution of Ca(NO3)2 at 298 K. Given that: A = 0.509 for aqueous solution at 25 °C. [y+ 0.403] b) The molar conductivity (A) of 0.0250 M HCOOH (aq) was measured at 4.61 mS m? mol-1. By referring to Table 1, calculate i) molar conductivity of infinite dilution (A.) of HCOOH (aq) (in unit ms m? mol4) [40.42 ms m? mol1] ii) degree of dissociation (a) of HCOOH (aq) [0.114] iii) acidity constant (Ka) [3.67x104] iv) pka [3.44] (hint: HA (aq) + H2O (I) = H30* (aq) + A (aq), Ka = аНА c) Calculate the solubility (s) of BaSO4 (Ksp = 1.08×1010) %3D i) in pure H20 [1.04×10$]

QUESTIOΝ1 a) Calculate ionic strength (Im) and mean activity coefficient (Y+) for a 0.050 m solution of Ca(NO3)2 at 298 K. Given that: A = 0.509 for aqueous solution at 25 °C. [y+ 0.403] b) The molar conductivity (A) of 0.0250 M HCOOH (aq) was measured at 4.61 mS m? mol-1. By referring to Table 1, calculate i) molar conductivity of infinite dilution (A.) of HCOOH (aq) (in unit ms m? mol4) [40.42 ms m? mol1] ii) degree of dissociation (a) of HCOOH (aq) [0.114] iii) acidity constant (Ka) [3.67x104] iv) pka [3.44] (hint: HA (aq) + H2O (I) = H30* (aq) + A (aq), Ka = аНА c) Calculate the solubility (s) of BaSO4 (Ksp = 1.08×1010) %3D i) in pure H20 [1.04×10$]

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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