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H2SO3, H2SO4 and H2SO4 are more acidic.
What is acid dissociation constant?
To evaluate an acid's potency quantitatively, use the term “acid dissociation constant” (Ka). The equilibrium value computed for the ionization of an acid is called the acid dissociation constant.
H2SO3 and H2SeO3:
H2SO3 has a Ka of 1.54 x 10-2 and 2.3 x 10-3.
H2SO3 has a higher Ka value than HeSeO3. Therefore, H2SeO3's conjugate base is less stable than H2SO3's. More acidic than H2SO3.
H2SeO4 and H2SO4:
Because Se is larger than S, its conjugate base, H2SeO4, is less stable than H2SO4. More acidic than H2SO4.
H2SO3 and H2SO4:
Because its conjugate base is more stable than that of H2SO3's, H2SO4, it is more acidic.
Hence, the significance of the acid dissociation constant is aforementioned.
Learn more about on acid dissociation constant, here:
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