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JEE Main 2026 Chemistry question

ChemistryEquilibriumJEE Main 2026

Given is a concentrated solution of a weak electrolyte of concentration 'c' and dissociation constant 'K'. The degree of dissociation is given by:

Answer: (B)

Solution

For ⇌xA+yB, K=(cxα)ˣ(cyα)ʸ/[c(1−α)]. For a weak electrolyte 1−α≈1, so K=ˣyʸα^{x+y}, giving α=[K/ˣyʸ.

Question ID VK-015615