Chem test for anions

Question 1

Law of conservation of mass

Answer 1

Totals mass of the products of a chemical reaction is the same as the total mass of the reactants

Question 2

Law of conservation of matter

Answer 2

In any chemical reaction matter is neither created nor destroyed but merely changes from one form into another

Question 3

Chloride ions in aqueous solution

Answer 3

Silver nitrate added turns cloudy
Dilute ammonia is added cloudiness disappears

Question 4

Sulfate ions and sulfite ions in aqueous soloution

Answer 4

Barium chloride turns cloudy white solid materials settle
Dilute HCL is added sulfate soloution cloudiness remains sulfite soloution cloudiness disappears

Question 5

Carbonate ions and hydrogen carbonate ions in aqueous soloution

Answer 5

Dilute HCL added to carbonate salt in boiling tube effervescence present gas bubble through limewater turns milky
Magnesium sulfate added to carbonate salts
White precipitate forms for carbonate soloution no precipitate forms for hydrocarbonate

Question 6

Nitrate ions in aqueous soloution

Answer 6

Irons sulfate added CONSENTRATEDsulfric acid is added down the side of test tube
Brown ring is formed

Question 7

Phosphate ion in aqueous soloution

Answer 7

Ammonium molybate added drops of concentrated nitric acid test tube put in warm water
Yellow precipitate is formed ammonium phosphomolybate