sentence: Arsenous acid is a colorless solution.
sentences_after: It is a weak acid. It reacts with bases to make arsenite salts. It is highly toxic. It cannot be made in a crystalline form because it turns into arsenic trioxide and water again. It is similar to phosphorous acid, although it is not a strong reducing agent.
concept_name: arsenous acid
headings: Arsenous acid Properties
categories: Acids Arsenic compounds