Question

Which of the following pairs are expected to form precipitate when mixed with each other?

• A. Sodium and sulphate ion
• B. Sodium ion and sulphide ion
• C. Ferrous ion and $P{O}_4^{3-}$
• D. None of the above

Answer 1

The correct option is C Ferrous ion and $P{O}_4^{3-}$

Ferrous ion and $P{O}_4^{3-}$ form precipitate when mixed with each other as – ferrous phosphate, $F{e}_3(P{O}_4{)}_2$ It is used in garden chemicals such as moss killers and slug pellets.