What Is the Correct Name for BaHPO3?

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SUMMARY

The correct name for the compound BaHPO3 is barium hydrogen phosphite. This conclusion is based on the understanding that the compound is derived from phosphorous acid (H3PO3), where the suffix -ite indicates one less oxygen than the corresponding -ic acid. The presence of hydrogen in the name is necessary to differentiate BaHPO3 from Ba3(PO3)2, which could otherwise lead to confusion. Therefore, the naming convention accurately reflects the compound's chemical structure and its relationship to the acid.

PREREQUISITES
  • Understanding of chemical nomenclature, specifically the -ite and -ate suffixes.
  • Knowledge of acid derivatives and their corresponding salts.
  • Familiarity with the properties of phosphorous acid (H3PO3).
  • Basic knowledge of metal cations and their role in compound formation.
NEXT STEPS
  • Research the naming conventions for polyatomic ions and their derivatives.
  • Study the properties and reactions of phosphorous acid and its salts.
  • Learn about the differences between -ite and -ate suffixes in chemical nomenclature.
  • Explore examples of other metal cation compounds derived from acids.
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Chemistry students, educators, and professionals involved in chemical nomenclature and compound identification will benefit from this discussion.

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Homework Statement


Name the following compound:
BaHPO3

2. The attempt at a solution
Im confused on whether it is:
BaHPO3-->barium hydrogen phosphite?
BaHPO3-->barium phosphonate? OR
BaHPO3-->barium phosphite?

Or am i completely wrong with all 3 guesses?
 
Last edited:
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The acid would be phosphorous acid, H2PO3 (-ic would have one more hydrogen and oxygen, H3PO4). Because of this, when combined with a metal cation, the suffix becomes -ite. Barium Phosphite. Hydrogen does not need to be mentioned because it is assumed that it's an acid derivative from the suffix -ite.
 
Gannon said:
The acid would be phosphorous acid, H2PO3 (-ic would have one more hydrogen and oxygen, H3PO4).

Phosphorous acid is H3PO3. -ic means one hydrogen less, -ous means one oxygen less.

Because of this, when combined with a metal cation, the suffix becomes -ite. Barium Phosphite. Hydrogen does not need to be mentioned because it is assumed that it's an acid derivative from the suffix -ite.

You need to mention hydrogen to be able to differentiate between Ba3(PO3)2 and BaHPO3, which will be otherwise indistinguishable.
 

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