Context: The interactions of carbonate anions with uranium(VI) cause the Pourbaix diagram to change greatly when the medium is changed from water to a carbonate containing solution. While the vast majority of carbonates are insoluble in water (students are often taught that all carbonates other than those of alkali metals are insoluble in water), uranium carbonates are often soluble in water. This is because a U(VI) cation is able to bind two terminal oxides and three or more carbonates to form anionic complexes.

Question: In what medium does the Pourbaix diagram change when carbonate anions interact with uranium(VI)?
Answer: carbonate containing solution

Question: What notable carbonates are often water soluble?
Answer: uranium

Question: What does a uranium(VI) cation form when it binds to two terminal oxides and three or more carbonates?
Answer: anionic complexes

Question: In what medium does the Pourbaix diagram change when carbonate anions interact with uranium(VII)?
Answer: Unanswerable

Question: In what medium does the Pourbaix diagram change when carbonite anions interact with uranium(VI)?
Answer: Unanswerable

Question: What notable carbonates are unoften water soluble?
Answer: Unanswerable

Question: What does a uranium(VI) cation form when it binds to two terminal dioxides and three or more carbonates?
Answer: Unanswerable

Question: What does a uranium(VII) cation form when it binds to two terminal oxides and three or more carbonates?
Answer: Unanswerable