How do we represent the complete, and net ionic equations for the reaction between hydrogen iodide, and potassium hydroxide?

1 Answer
anor277
Nov 9, 2016

HI(aq) + KOH(aq) rarr KI(aq) + H_2O(l)

Explanation:

And the net ionic equation is rather simpler:

H_3O^+ + HO^(-) rarr 2H_2O(l)

But what do we mean by HI(aq)? The (aq) designation means the socalled "aquated ion". In water, hydrogen iodide speciates to H_3O^+ and I^-. So-called hydronium ion, H_3O^+, as far as anyone knows, is a cluster of water molecules, with an EXTRA proton, H_9O_4^+ or H_11O_5^+ or something similar.

This water cluster not only holds for the hydronium ion, but potassium ion, K^(+)(aq), is probably [K(OH_2)_6]^+, or Cl(aq)^- [Cl(H_2O)_(4-6)]^-.

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