Oblicz stopień dysocjacji kwasu CH3COOH o Cm= 0,0001mol/dm3 i K= 1,75 * 10^(-5)
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Pozdrawiam, Adam
K=1,75*10^-5
Cm/K> 400, więc
K=Cm*α²/1-α
Po przekształceniu otrzymuję:
α²*Cm + K*α - K = 0
α = -K+√K²+4K*Cm/2Cm
α = -1,75*10^-5 + √(1,75*10^-5)²+4(1,75*10^-5)*1*10^-4 /2*1*10^-4
α = -1,75*10^-5 + √3,0625*10^-10+7*10^-9 /2*10^-4
α = -1,75*10^-5 + √7,30625*10^-9 /2*10^-4
α = 0,33