Molar conductivity of substance “A” is 5.9×103 S/m and “B” is 1 x 10-16 S/m. Which of the two is most likely to be copper metal and why?

Question 35:Molar conductivity of substance “A” is 5.9×103 S/m and “B” is 1 x 10-16 S/m. Which of the two is most likely to be copper metal and why?

The correct answer is – Molar conductivity is a measure of the ability of a substance to conduct electricity in a solution, which depends on the concentration of ions in the solution. Copper metal is not an electrolyte, so it does not conduct electricity in solution and has a molar conductivity close to zero. Therefore, substance B with a molar conductivity of 1 x 10-16 S/m is more likely to be copper metal, as it has very low conductivity in solution. On the other hand, substance A with a molar conductivity of 5.9×103 S/m is likely to be an ionic compound that dissociates into ions in solution and has high conductivity.