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Per NCERT §6.5, why do pure solids and pure liquids NOT appear in the expression for the equilibrium constant?
ATheir concentration is constant
BThey do not react
CTheir concentration is zero
DTheir activity is undefined
Answer & Solution
Correct answer: A. Their concentration is constant
NCERT §6.5: molar concentration of a pure solid or pure liquid is fixed by density, independent of amount.
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