For an arbitrary weak electrolyte with the formula undergoing partial dissociation with a degree of — Solutions and Colligative Properties Chemistry Question
Question
For an arbitrary weak electrolyte with the formula $A_x B_y$ undergoing partial dissociation with a degree of dissociation $\alpha$, which mathematical expression defines the van't Hoff factor ($i$)?
Answer: B
💡 Solution & Explanation
The total number of ions produced per formula unit is $n = x + y$. Substituting this into the standard dissociation formula $i = 1 + \alpha(n - 1)$ directly yields $i = 1 + \alpha(x + y - 1)$.
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