Molar conductivity of ionic solution depends on_____.

Options

A. temperature
B. distance between electrodes
C. concentration of electrolysis in solution
D. surface area of electrodes.

Answer

To answer the question regarding what the molar conductivity of an ionic solution depends on, we can break it down into several key factors:

### Step-by-Step Solution:

1. **Understanding Molar Conductivity**:
Molar conductivity (Λ_m) is defined as the conductivity (κ) of an electrolyte solution divided by its molar concentration (C). It is expressed as:
\[ \Lambda_m = \frac{\kappa}{C} \]

2. **Temperature Dependence**:
Molar conductivity is influenced by temperature. As temperature increases, the mobility of ions in the solution generally increases, leading to higher conductivity. Therefore, we can say:
\[ \text{Molar conductivity depends on temperature.} \]

3. **Concentration Dependence**:
The concentration of the electrolyte also affects molar conductivity. At low concentrations, the molar conductivity increases with dilution due to reduced ion-ion interactions. However, at higher concentrations, the conductivity may decrease due to increased interactions between ions. Thus, we conclude:
\[ \text{Molar conductivity depends on the concentration of the electrolyte.} \]

4. **Ion Mobility**:
The inherent mobility of the ions in the solution is another crucial factor. Different ions have different mobilities based on their size and charge. Therefore, we can state:
\[ \text{Molar conductivity depends on the type of ions present.} \]

5. **Overall Conclusion**:
In summary, the molar conductivity of an ionic solution depends on:
- Temperature
- Concentration of the electrolyte
- Type of ions (their mobility)

### Final Answer:
Molar conductivity of ionic solution depends on temperature, concentration of the electrolyte, and the type of ions present.

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