Find the value of limiting molar conductivity, Chemistry

Assignment Help:

(a) Describe how you would carry out a series of experiments to determine the molar conductivities (Λm) of an electrolyte at various concentrations, starting with the measurement of conductance.  Explain clearly how you would calibrate the apparatus to obtain the cell constant, and how you would use this value in your calculations.

(b) Explain briefly how you would plot the data obtained from the experiments in part (a) graphically to find the value of the limiting molar conductivity (Λm0) of:

(i)  a strong electrolyte;

(ii) a weak electrolyte.

(c) The molar conductivity of aqueous potassium perchlorate at 298K has been measured at selected concentrations:

 

c /mol dm-3

 

0.0005

 

0.0050

 

0.0200

 

0.0500

 

0.1000

 

Λm /S m2 mol-1

 

0.0139

 

0.0134

 

0.0128

 

0.0122

 

0.0115

(i) By means of a suitable graph, estimate the limiting molar conductivity (Λm0) of aqueous potassium perchlorate.

(ii) If the limiting molar ionic conductivity (λ-) of the perchlorate ion is 6.85 x 10-3  S m2 mol-1, calculate that of the potassium ion (λ+).


Related Discussions:- Find the value of limiting molar conductivity

Uses, Ask question #Minimuuses of nitoalkanem 100 words accepted#

Ask question #Minimuuses of nitoalkanem 100 words accepted#

Calculate temporary, Q. A sample of water on analysis was found to contain ...

Q. A sample of water on analysis was found to contain the following analytical data: Mg (HCO 3 ) 3 = 16.8mg/L, MgCl 2 = 19mg/L, Mg (NO 3 ) 2 = 29.6 ppm, CaCO 3 = 20 p

Lactic acid, What are gredients for chemical and physical properties in lac...

What are gredients for chemical and physical properties in lactic acid?

What are the primary source of energy, Q. What are the primary source of en...

Q. What are the primary source of energy ? Oils and fats form an integral part of the dietaries the world over. In the body they are the primary source of energy. As you know,

Polymer, how vulcanisation does changes the chareter of natural rubber

how vulcanisation does changes the chareter of natural rubber

TRANSITION METAL, How many unpaired electrons in Fe (II)?

How many unpaired electrons in Fe (II)?

Mechanism of Methanol, What are the different mechanism to produce methanol...

What are the different mechanism to produce methanol(CH3OH)?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd