Question

1. Conductivity: (15 marks total) The limiting molar conductivity of Na,SO4(aq) is 259.8 ? 1 mor' cm2 at 25°C and l atm and the transport number of the cation is 0.386. a) Using only the information above find the limiting molar ionic conductivities of Na (aq) and SO4 (aq) (4 marks). If you can't work this part out please use values of 20 and 60 cm-moll ?) respectively for subsequent sections b) Calculate the ionic mobility of each ion (2 marks) c) In a moving boundary experiment, a current of 2 mA was applied for 3000s in a d) Calculate the concentration of the solution (2 marks) and the equivalent e) If the solution were H SO, would you expect the molar ionic conductivity of the tube of cross-sectional area 0.1 cm2 and the boundary moved 9.6 cm. Calculate the conductivity of solution (3 marks) conductivity (2 marks). cation to be larger or smaller than Na"? (2 marks). Justify your answer

Answer 1

at Teup, 25°C a pressure.. lam A Naso

b) fil, 6s00 Sou2- 16500 15.5 っ6.211x10-4 On ひ。

dl) 1 Šmale.. vit ee tik yol.uj thow Jya田due to