Chemistry Qualitative Analysis

Question 1

Test for gases: what happens when ammonia is tested?

Answer 1

It turns damp red litmus paper blue

Question 2

Test for gases: what happens when CO2 is tested?

Answer 2

It turns limewater milky

Question 3

Test for gases: what happens when chlorine is tested?

Answer 3

Bleaches damp litmus paper

Question 4

Test for gases: what happens when hydrogen is tested?

Answer 4

‘pops’ with a lighted splint

Question 5

Test for gases: what happens when oxygen is tested?

Answer 5

relights a glowing splint

Question 6

Test for gases: what happens when sulfur dioxide is tested?

Answer 6

turns acidified aqueous potassium manganate from purple to colourless

Question 7

Test for metal ion: what happens when lithium is tested?

Answer 7

red

Question 8

Test for metal ion: what happens when sodium is tested?

Answer 8

yellow

Question 9

Test for metal ion: what happens when potassium is tested?

Answer 9

lilac

Question 10

Test for metal ion: what happens when copper[II] is tested?

Answer 10

blue-green

Question 11

Test for anions: what happens when carbonate is tested?

Answer 11

CO2 produced

Question 12

Test for anions: what happens when chloride is tested?

Answer 12

white ppt.

Question 13

Test for anions: what happens when bromide is tested?

Answer 13

cream ppt.

Question 14

Test for anions: what happens when iodide is tested?

Answer 14

yellow ppt.

Question 15

Test for anions: what happens when nitrate is tested?

Answer 15

ammonia produced

Question 16

Test for anions: what happens when sulfate is tested?

Answer 16

white ppt.

Question 17

Test for anions: what happens when sulfite is tested?

Answer 17

sulfur dioxide produced will turn acidified aqueous potassium manganate [VII] from purple to colourless.