Dr Entropy has a water sample containing both phosphate and sulfate, and the five solutions

ammonium fluoride, NH4F

(i)  Explain how the two anions (phosphate and sulfate) could be separated making use of the solutions above and an equipment like a Büchner funnel that can collect precipitated solids on a filter while allowing the remaining solution to pass through into a flask.

(Hint: Refer to the solubility table at the end of this document to determine what could be added to precipitate only one of the two anions.)

(ii) What is a balanced chemical reaction equation for any relevant precipitation reaction, including the states of all chemical species.