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Pharmaceutics Question on Liquids(solutions, syrups, elixirs, spirits, aromatic water, liquid for external uses)

According to distribution law, select the appropriate expression for the concentration of a solute when it exists as monomer in solvent A and dimer in solvent B (Assume CA = concentration of solute in solvent A, CB=concentration of solute in solvent B, α=degree of dissociation)

A

K=CA2CBK = \frac{C_A}{2\sqrt{C_B}}

B

K=CACBK = \frac{C_A}{\sqrt{C_B}}

C

K=CACB(1−α)K = \frac{C_A}{C_B (1 - \alpha)}

D

K=CACB(2−α)K = \frac{C_A}{C_B (2 - \alpha)}

Answer

K=CACBK = \frac{C_A}{\sqrt{C_B}}

Explanation

Solution

The correct option is (B): K=CACBK = \frac{C_A}{\sqrt{C_B}}