The molar conductivity, often denoted as
Λm, can be calculated by the formula:
Λm=where:
κ represents the conductivity of the solution.
C is the concentration of the solution in moles per liter.
In the given problem, the conductivity
κ is provided as
6.065×10−4Ω−1cm−1, and the concentration
C of the
NaI solution is given as
0.005M.
For calculating molar conductivity, we must also ensure that the units are consistent, converting concentration to moles per cubic centimeter (since the conductivity unit involves
cm ) if necessary.
Here is how the calculation is performed:
After multiplying and dividing as required, the result is:
Λm=121.3Ω−1cm2mol−1The answer reflects the molar conductivity of the
NaI solution.