degree of dissociation is the part of which equilibrium
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The degree of dissociation (α) for weak acids and bases is defined as the fraction of 1 mole that dissociates at equilibrium.
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Degree of Dissociation
The degree of dissociation of a substance is defined as the fraction of its molecules dissociating at a given time.
Let us consider the reaction,
2NH3 (g) \rightleftharpoons N2 (g) + 3H2 (g)
Let the initial moles of NH3(g) be ‘a’. Let x moles of NH3 dissociate at equilibrium.
Degree of dissociation (a) of NH3 is defined as the number of moles of NH3 dissociated per mole of NH3.
if x moles dissociate from ‘a’ moles of NH3, then, the degree of dissociation of NH3 would be x/a.
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