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10 questions from this quiz
The extent of ionisation in water
Water is the solvent; its conc. is constant
It ionises only to a small extent
Hydrofluoric acid (7.6×10−47.6 \times 10^{-4}7.6×10−4)
[HA]equilibrium ≈ [HA]initial
Because [A⁻] = [H₃O⁺]
[A−][HA]initial×100%\frac{[\text{A}^-]}{[\text{HA}]_{initial}} \times 100\%[HA]initial[A−]×100%
Ka1>Ka2>Ka3K_{a1} > K_{a2} > K_{a3}Ka1>Ka2>Ka3
Smaller pKaK_aKa means stronger acid
Weak acid (Ka2=10−2K_{a2} = 10^{-2}Ka2=10−2)
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