ION TESTS

Question 1

Lithium flame test

Answer 1

Compounds result in a red flame

Question 2

Sodium flame test

Answer 2

Compounds result in a yellow flame

Question 3

Potassium flame rptest

Answer 3

Compound results in a lilac flame

Question 4

Calcium flame test

Answer 4

Compounds result in an orange-red flame

Question 5

Compter flame test

Answer 5

Compounds result in a blue-green flame

Question 6

Cation

Answer 6

Positive ion

Question 7

Cation - aluminium ion

Answer 7

White precipitate, DISSOLVES in excess NaOH

Question 8

What can be used to identify some cations

Answer 8

Sodium hydroxide (NaOH)

Question 9

Cation - Calcium ions

Answer 9

White precipitate, DOES NOT DISSOLVE in excess NaOH

Question 10

Cation - copper ion

Answer 10

Blue precipitate

Question 11

Cation -Iron (II) ion

Answer 11

Green precipitate

Question 12

Cation - Iron (III) ion

Answer 12

Brown precipitate

Question 13

Cation - ammonium ion

Answer 13

Gentle heating, AMMONIA GAS is formed

Question 14

Identifying carbonate ions

Answer 14

CARBONATE IONS react with DILUTE ACIDS to form CARBON DIOXIDE GAS.
carbon dioxide can be identified with limewater.

Question 15

Identifying sulfate ions

Answer 15

SULFATE IONS in solutions produce a WHITE precipitate with BARIUM CHLORIDE in the precense of DILUTE HYDROCHLORIC ACID.

Question 16

Identifying halide ions

Answer 16

HALIDE IONS in solutions produce PRECIPITATES with silver nitrate solution in the presence of dilute nitric acid

Question 17

Halide ion - silver chloride is

Answer 17

WHITE

Question 18

Halide ion - silver bromide is

Answer 18

CREAM

Question 19

Halide ion - silver iodine is

Answer 19

YELLOW