Which of these are a Brønsted acid, a Brønsted base, or both a Brønsted acid and a Brønsted base?

- [tex]\text{PO}_4^{3-}[/tex]
- [tex]\text{ClO}_2^{-}[/tex]
- [tex]\text{NH}_4^{+}[/tex]
- [tex]\text{HCO}_3^{-}[/tex]
- [tex]\text{H}_2\text{PO}_4^{-}[/tex]

We can classify the ion molecules as follows:
PO4^3- = Bronsted Base ClO2- = Bronsted Base NH4+ = Bronsted Acid HCO3- = Both H2PO4- = Both
For a Bronsted-Lowry acid and bases, an acid is a proton (hydrogen ion) donor. A base is a proton (hydrogen ion) acceptor. Hope this answers the question. Have a nice day.

Answered by taskmasters | 2024-06-24

PO4^3- = Bronsted Base
ClO2- = Bronsted Base
NH4+ = Bronsted Acid
HCO3- = Both
H2PO4- = Both ;

Answered by BGC1234 | 2024-06-24

PO₄³⁻ and ClO₂⁻ are Brønsted bases, NH₄⁺ is a Brønsted acid, and both HCO₃⁻ and H₂PO₄⁻ can act as both Brønsted acids and bases. This classification is based on the ability of these species to donate or accept protons (H⁺).
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Answered by taskmasters | 2024-10-12