,CLASSIFICATION OF SUBSTANCES
On the basis of their dissociation nature :
(i) Strong electrolytes : Substances wh
and are strong electrolytes. e.g. HCl, H2
(ii) Weak electrolytes : Substances whi
, pH CALCULATUION
Case (i) A weak acid in water
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if α = K a is < 0.1 then [H ]≈ K
C
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General Expression : [ H ] =0.5
Similarly for a weak base, subs
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