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Naming Polyatomic Ions and Acids

Naming Polyatomic Ions and Acids. Oxyanions. Oxyanions- negative ions containing oxygen. These have the suffix “-ate” or “-ite” “-ate” means it has more oxygen atoms bonded, “-ite” has less For example SO 4 2- sulfate SO 3 2- sulfite. Oxyanions.

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Naming Polyatomic Ions and Acids

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  1. Naming Polyatomic Ions and Acids

  2. Oxyanions • Oxyanions- negative ions containing oxygen. • These have the suffix “-ate” or “-ite” • “-ate” means it has more oxygen atoms bonded, “-ite” has less • For example • SO42- sulfate • SO32- sulfite

  3. Oxyanions • Oxyanions may contain the prefix “hypo-”, less than, or “per-”, more than. • For example • ClO4- Perchlorate • ClO3- Chlorate • ClO2- Chlorite • ClO- Hypochlorite

  4. Acids • Certain compounds produce H+ ions in water, these are called acids. • You can recognize them because the neutral compound starts with “H”. • For example HCl, H2SO4, and HNO3. • All acids are like ionic compounds but the metal is replaced with H+ • It will be H +halogens or H + polyatomic ions

  5. Naming acids • Does it contain oxygen? • If it does not, it gets the prefix “hydro-” and the suffix “-ic acid” • HCl • Hydrochloric acid • HF • Hydrofluoric acid • HCN • Hydrocyanic acid

  6. Naming Acids • If it does contain an oxyanion, then replace the ending. • If the ending was “–ate”, add “-ic acid” • If the ending was “–ite”, add “-ous acid” • H2SO4 Sulfuric Acid • H2SO3 Sulfurous Acid

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