Pharm 251: Electrolytic Conductivity

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What is the primary focus of conductimetric analysis?

Optical properties of solutes

Magnetic properties of aqueous solutions

Electrical properties of ions in solution (correct)

Thermodynamic properties of solvents

What is the main factor that affects the existence of electrically charged particles in a solution?

Solvent properties (correct)

Viscosity of the medium

Concentration of the solute

Temperature of the solution

According to the course outline, what should students be able to do by the end of the course?

Demonstrate the applications of electrolytic conductivity

Explain the concept of electrolytic conductivity and terminologies

Both A and B (correct)

None of the above

What is the rate of movement of ions in a solution dependent on?

A number of factors including degree of solvation, temperature, and viscosity Signup and view all the answers

What is the significance of conductimetric analysis in pharmaceutical chemistry?

It is of immense importance to the pharmaceutical chemist Signup and view all the answers

What is the university affiliated with the course instructor?

Kwame Nkrumah University of Science and Technology Signup and view all the answers

What is the unit of the quantity of electricity passed during electrolysis?

Coulombs Signup and view all the answers

What is the relationship between the weight of substance liberated and the equivalent weight of the substance?

Directly proportional Signup and view all the answers

What is the specific conductivity of the 0.1 M ZnSO4 solution?

0.0212 mho/cm Signup and view all the answers

What is the condition under which solutions do not obey Ohm's law?

Very high voltages Signup and view all the answers

What is the unit of the cell constant?

cm-1 Signup and view all the answers

What is the weight of Ag liberated by 1000 Coulombs at the electrode?

5 g Signup and view all the answers

What is the equivalent weight of copper in grams?

31.78 Signup and view all the answers

What happens to the degree of ionization of weak electrolytes as dilution increases?

It increases Signup and view all the answers

What is the characteristic of strong electrolytes in terms of ionization?

Complete ionization at all concentrations Signup and view all the answers

What is the effect of dilution on the conducting power of ions in a solution?

It increases Signup and view all the answers

What is the weight of copper that will be liberated by the same quantity of electricity passing through solutions of copper and silver?

0.295 g Signup and view all the answers

What is the main difference between strong and weak electrolytes?

Their degree of ionization in solution Signup and view all the answers

What is the unit of specific conductivity?

ohm-1 cm-1 Signup and view all the answers

What is the formula to calculate the resistance of a solution?

R = ρI/a Signup and view all the answers

What is the unit of cell constant?

cm-1 Signup and view all the answers

What is the formula to calculate the equivalent conductivity?

Λ = kv Signup and view all the answers

What is the purpose of a conductivity bridge?

To measure the conductance of a solution Signup and view all the answers

What is the unit of resistivity?

ohm cm Signup and view all the answers

What is the equivalent conductivity of formic acid (HCOOH)?

386 Ω-1cm2equiv-1 Signup and view all the answers

What is the equivalent conductivity of ammonium hydroxide (NH4OH)?

246.3 Ω-1cm2equiv-1 Signup and view all the answers

What is the formula for calculating the degree of ionization (α)?

α = /v /∞ /v Signup and view all the answers

What is the specific conductivity of HCOOH at a dilution of 8 L?

0.0238 ohm-1cm-1 Signup and view all the answers

What is the unit of equivalent conductivity?

Ω-1cm2equiv-1 Signup and view all the answers