Respuesta :

Percentage ionization of ethylamine is 4%.

What is the percent ionization?

The portion of the original chemical that has undergone ionization is the percent ionized. So, we contrast the ion's concentration in solution with the neutral species' initial concentration.

Given,

Concentration of ethylamine =0.427 m,

Concentration of calcium hydroxide = 0.113 m,

As ethylamine(CH₃CH₂NH₂) is a weak base, it will not in equilibrium,

CH₃CH₂NH₂  ⇆ CH₃CH₂NH₃⁺ + OH⁻

also from CaOH₂ ; OH⁻ ions are coming which will show common ion effect

CaOH₂ → Ca⁺ + 2OH⁻

0.113         -           -

-                0.113     0.113×2

                             =0.226

Now,  CH₃CH₂NH₂  ⇆ CH₃CH₂NH₃⁺ + OH⁻

c - cα                                 cα  + 0.226 ≈ 0.226

Kₐ = [ OH⁻] [CH₃CH₂NH₃⁺]/[CH₃CH₂NH₃⁺]

    =[tex]\frac{c\alpha \times 0.226}{c-c\alpha}\\[/tex]

     = [tex]\frac{\alpha\times 0.226 }{c- c\alpha} \\[/tex]

0.01= α ×0.226

α= [tex]\frac{0.01}{0.226}[/tex]

α=0.44

now percentage ionization = 4%.

To know more about percent ionization visit:

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