Question

Enter an equation to show how h2po3− can act as a base with hs− acting as an acid

Answer 1

The base is the species that accept hydrogen, and the acids donate hydrogen ions. Dihydrogen phosphite acts as a base and hydrosulfide sulfanide act as an acid.

What are acids and bases?

Acids are molecules or chemical species that can donate a proton or a hydrogen ion to another chemical species.

Bases are the ions or molecules that accept a proton or hydrogen ion and release a hydroxide ion.

The acid and base relationship is shown as,

$\rm H2PO_{3}^{-} + HS^{-} \leftrightarrows S^{-} + H_{3}PO_{3}$

Learn more about acids and bases here:

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