Questions
The hydrogen ion concentration in weak acid of dissociation constant and concentration c is nearly equal to
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a
Ka/c
b
C/Ka
c
KaC
d
Kac
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Correct option is D
HA ⇄ H3O+ + A-At equilibrium C1-α Cα CαH3O+ = Cα and Ka=Cα×CαC(1-α)=Cα2 ⇒ α=Kac So H3O+ = C Kac = Kac
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A monoprotic acid in 1.00 M solution is 0.01% ionised. The dissociation constant of this acid is
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