Answer to Question #107026 in General Chemistry for Aisha

Question

which of the following is not an acid anhydride CO2 P2O5 Magnesium NO2 CO

Answer 1

Question: which of the following is not an acid anhydride CO2 P2O5 Magnesium NO2 CO

Answer: Magnesium and CO are not acid anhydrides.

The other substances are definitely acid anhydrides:

CO₂ is an anhydride of carbonic acid - H₂CO₃

P₂0₅ is an anhydride of orthophosphoric acid - H₃PO₄

NO₂ is an anhydride of both nitric and nitrous acids - 2NO₂+H₂O=HNO₃+HNO₂