Anion Quiz

Question 1

If 0.2M of Ba(NO3)2 is added, which forms a white precipitate?

Answer 1

BaCO3, Ba3(PO4)2, BaSO3, BaSO4

Question 2

If 0.2M of Ba(NO3)2 is added and a white precipitate forms, which salts DONT dissolve with the addition of 4-5 drops of 6M HCl?

Answer 2

BaSO4 and BaSO3

Question 3

If 0.2M of Ba(NO3)2 is added, which anions have no reaction?

Answer 3

Cl-, Br, I-

Question 4

If 6M H2SO4 and 0.04M KMnO4 is added, which anions have no change of the purple color?

Answer 4

CO3, HPO4, Cl-, SO4

Question 5

If 6M H2SO4 and 0.04M KMnO4 is added, which anions have the purple color disappear?

Answer 5

SO3, Br-, I-

Question 6

If 6M H2SO4 and 0.04M KMnO4 is added, as well as cyclohexane, what are the color changes?

Answer 6

Br- turns into a yellow-brown color
I- turns into a brown solution, with the cyclohexane layer turning pink/purple

Question 7

If the solid salt are infused with 18M H2SO4, which anions have no reactions?

Answer 7

HPO4 and SO4

Question 8

If the solid salt are infused with 18M H2SO4, what is the reaction for CO3?

Answer 8

Turns into CO2 vigorous effervescence

Question 9

If the solid salt are infused with 18M H2SO4, what is the reaction for SO3?

Answer 9

Turns into SO2 effervescence

Question 10

If the solid salt are infused with 18M H2SO4, what is the reaction for Cl-?

Answer 10

Turns into HCl effervescenece

Question 11

If the solid salt are infused with 18M H2SO4, what is the reaction for Br-?

Answer 11

Br2 red-brown vapor after a few minutes