The distribution law is applied for the distribution of basic acid between

Options

A. Water and ethyl alcohol
B. Water and amyl alcohol
C. Water and sulphuric acid
D. Water and liquor ammonia

Answer

To solve the question regarding the distribution law applied for the distribution of a basic acid between two immiscible solvents, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Distribution Law**: The distribution law, also known as Nernst's distribution law, states that when a solute is distributed between two immiscible solvents, the ratio of the concentrations of the solute in each solvent at equilibrium is constant at a given temperature.

2. **Identifying the Solvents**: In this case, we are considering the distribution of a basic acid. Commonly used solvents for such distributions include water and organic solvents like amyl alcohol.

3. **Conditions for the Distribution Law**: The distribution law is valid under certain conditions:
- The temperature must be constant throughout the solution.
- The amount of solute added should be small compared to the volume of the solvents.
- The solute must be in the same molecular state in both solvents.
- The two solvents must be immiscible.

4. **Application of the Law**: When the basic acid is added to the two immiscible solvents (e.g., water and amyl alcohol), it will distribute itself between the two phases according to its solubility in each solvent. The concentrations of the acid in each solvent can be expressed as:
\[ \frac{C_1}{C_2} = K \]
where \( C_1 \) is the concentration in solvent 1 (e.g., water), \( C_2 \) is the concentration in solvent 2 (e.g., amyl alcohol), and \( K \) is the distribution coefficient, which is constant at a given temperature.

5. **Conclusion**: Therefore, the distribution law can be applied to determine how a basic acid distributes itself between two immiscible solvents like water and amyl alcohol, provided that the stated conditions are met.