The molar conductivity is maximum for the solution of concentration __________.

Options

A. 0.004 M
B. 0.002 M
C. 0.005 M
D. 0.001 M

Explanation

To find the concentration at which molar conductivity is maximum, we can follow these steps:

### Step 1: Understand Molar Conductivity
Molar conductivity (Λ_m) is defined as the conductivity (K) of an electrolyte solution divided by its molar concentration (C):
\[ \Lambda_m = \frac{K}{C} \]

### Step 2: Relationship Between Molar Conductivity and Concentration
From the formula, we can see that molar conductivity is inversely proportional to concentration. This means that as the concentration of the solution decreases, the molar conductivity increases.

### Step 3: Identify the Trend
At very low concentrations, the ions in the solution are less hindered by each other, allowing them to move more freely. Therefore, the molar conductivity reaches its maximum value at very low concentrations.

### Step 4: Determine the Concentration for Maximum Molar Conductivity
The concentration at which molar conductivity is maximum is typically very low. In this case, the concentration of 0.001 M is often cited as the point where molar conductivity is maximized for many electrolytes.

### Conclusion
Thus, the molar conductivity is maximum for the solution of concentration **0.001 M**.

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