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Each H present in the anion will go on to form one hydronium ion. In HCl, one H begets one hydronium ion per molecule HCl (monoprotic). In H2S04, two H's will beget two hydronium ions per molecule H2So4 (biprotic/polyprotic). This is important to remember in calculating the pH of a substance.
William Chan 1F wrote:If there's more than one H in front of the anion, let's say,
H2SO4, or H3PO4
It'll be polyprotic because there is more than 1 hydrogen in front.
Exactly! We should count the number of H atoms in the front of the anion, rather than count all H atoms, because not all H atoms would play a role in donating H atoms when dissociating in water. For example, CH3COOH is monoprotic, because only the last H atom would be donated, contributing to the fact that CH3COOH is an acid.
Are polyprotic acids stronger or weaker with the more hydrogens that they have? I thought that if something has multiple hydrogens it is more likely to give off a proton, therefore dissociates more, and is therefore stronger of an acid.
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