Question

With which of the following ions would you expect a precipate to form after the addition of silver nitrate solution? Select all that apply.

nitrate
carbonate
sulfite
sulfate
phosphate
chromate

Answer 1

Answer:

The following ions : carbonate, sulfite, may be sulfate and phosphate  are capable of forming precipitate by exposing them to a solution of silver nitrate.

Explanation:

There are some  solubility rules you should know.

• All sulfates are water soluble, except lead sulfates  (II), barium (II), strontium (II). The silver (I) and calcium (II) sulfates are slightly soluble.

• All carbonates are insoluble in water, except carbonates  of sodium (I), potassium (I) and ammonium.
• All arseniates, arsenites, phosphates, borates and sulphites are  insoluble in water, except sodium (I), potassium (I), ammonium and sulphite  magnesium (II)

Silver nitrate is a salt that DOES NOT form a precipitate.

AgNO3  -------->  Ag+  +  NO3-  

2Ag+  +  CO3-2  <------>  Ag2CO3

2Ag+  +  SO3-2 <-------> Ag2SO3

2Ag+  +  SO4-2 <-------> Ag2SO4

3Ag+   +  PO4-3  <-------> Ag3PO4