To observe the effect of concentration on the conductivity ele

Options

A. in A conductivity increases , in B conductivity decreases
B. in A conductivity decreases, while in B conductivity increases ,
C. in both A and B conducitvity increase
D. in both A and B conductivity decrease.

Explanation

To solve the question regarding the effect of concentration on the conductivity of electrolytes, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Conductivity**:
- Conductivity (κ) is defined as the ability of a solution to conduct electricity, which is influenced by the presence of ions in the solution. It is expressed as the conductance per unit volume.

**Hint**: Remember that conductivity depends on the number of charge carriers (ions) in the solution.

2. **Types of Electrolytes**:
- There are two types of electrolytes: strong electrolytes (e.g., sodium chloride, NaCl) that completely dissociate into ions in solution, and weak electrolytes (e.g., ammonium hydroxide, NH4OH) that partially dissociate.

**Hint**: Identify the difference between strong and weak electrolytes in terms of ion dissociation.

3. **Effect of Concentration**:
- When the concentration of an electrolyte is increased, the number of ions present in a given volume of solution also increases. This is true for both strong and weak electrolytes.

**Hint**: Consider how increasing the concentration affects the number of ions available for conduction.

4. **Conductivity and Ion Concentration**:
- Since conductivity is directly proportional to the number of ions per unit volume, increasing the concentration of the electrolyte will lead to an increase in conductivity.

**Hint**: Think about the relationship between ion concentration and conductivity; more ions mean higher conductivity.

5. **Analyzing the Containers**:
- In container A (weak electrolyte, NH4OH) and container B (strong electrolyte, NaCl), as the concentration of both solutions is increased, the conductivity in both containers will increase.

**Hint**: Compare the behavior of weak and strong electrolytes when concentration is increased.

6. **Conclusion**:
- Therefore, the correct conclusion is that the conductivity will increase in both containers A and B with increased concentration. The statement that conductivity decreases in container B is false.

**Hint**: Summarize your findings based on the behavior of electrolytes and their conductivity.

### Final Answer:
The correct answer is that the conductivity increases in both container A (weak electrolyte) and container B (strong electrolyte) when the concentration is increased.