Write the equations that represent the first and second ionization steps for selenic acid (H2SeO4) in water. (Use H3O instead of H.) First ionization step: H2O (l) Second ionization step: H2O (l)

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Chemistry

Shyla

10 March, 22:47

Write the equations that represent the first and second ionization steps for selenic acid (H2SeO4) in water. (Use H3O instead of H.) First ionization step: H2O (l) Second ionization step: H2O (l)

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Aryana Conner · Answer 1

First ionization step:

H₂SeO₄ (aq) + H₂O (l) → H₃O⁺ (aq) + HSeO₄⁻ (aq)

Second ionization step:

HSeO₄⁻ (aq) + H₂O (l) → H₃O⁺ (aq) + SeO₄⁻² (aq)

Explanation:

Selenic acid is a dyprotic and a strong acid with the formula: H₂SeO₄.

When it reacts to water, it release two protons in two ionizations.

Finally it gives hydronium to the medium.

H₂SeO₄ (aq) + H₂O (l) → H₃O⁺ (aq) + HSeO₄⁻ (aq)

HSeO₄⁻ (aq) + H₂O (l) → H₃O⁺ (aq) + SeO₄⁻² (aq)