# Acids using different solvents [closed]

Many polar protic solvents exist and ionic compounds are able to dissolve inside these substances for the same reason as water. So, theoretically, if a substance were to steal a $$H^+$$ ion from a polar protic solvent other than water, the end result would be an acid. So, my question is: Is it possible that such an acid can exist? If yes, then why is it rarely mentioned? If no, then what makes water so special in creating acids?

## closed as unclear what you're asking by Mithoron, Tyberius, Waylander, Todd Minehardt, airhuffNov 16 '18 at 21:52

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• There are plenty of reactions run in acetic acid – Waylander Nov 16 '18 at 9:12
• I don't understand this question, and the grammar needs improvement, as the first sentence ends in a hanging "as...". – Night Writer Nov 16 '18 at 11:22
• @Try Hard What about this: Is there a polar protic solvent of the form $H_2X$ where $X$ denotes anything other than one oxygen atom, that can react with a molecule $Y$ to form $HY^++HX^-$? – Kyky Nov 17 '18 at 3:37
• There are amphoteric molecules, such as aminoacids, which do something similar. en.wikipedia.org/wiki/Amphoterism – Night Writer Nov 17 '18 at 19:08

Organic chemists often use solvents other than water, and rather reactive (and noxious!) chemicals such as the Lewis acid $$\ce{BF3}$$, but the average grammar-school student is content with making vinegar and baking soda "geysers" (and has a longer life expectancy if she or he avoids using $$\ce{BF3}$$ in a science project).
• Follow-up question: Is water the only solvent to have a $pK_a$ the same as $pK_b$? If not, what other examples are there? – Kyky Nov 16 '18 at 10:09