anion test

Question 1

What test is used to identify the presence of chloride ions?

Answer 1

Silver nitrate test

Question 2

What color precipitate forms when silver nitrate is added to a solution containing chloride ions?

Answer 2

White precipitate

Question 3

What test is used to identify the presence of sulfate ions?

Answer 3

Barium chloride test

Question 4

What color precipitate forms when barium chloride is added to a solution containing sulfate ions?

Answer 4

White precipitate

Question 5

What test is used to identify the presence of carbonate ions?

Answer 5

Acid test

Question 6

What gas is evolved when acid is added to a solution containing carbonate ions?

Answer 6

Carbon dioxide gas

Question 7

What test is used to identify the presence of nitrate ions?

Answer 7

Add aqueous NaOH (aq) followed by aluminium foil or Devarda’s alloy and warm the mixture gently

Question 8

expected result of nitrate test

Answer 8

upon warming, colourless and pungent gas evolved, turns moist red litmus paper blue

Question 9

test for so4

Answer 9

add dilute nitric acid, then add aqueous barium nitrate

white ppt is formed

Question 10

test for cl- or i-

Answer 10

add dilute nitric acid, then add aqueous silver nitrate

white ppt formed for cl
yellow ppt formed for i

Question 11

test for carbonate

Answer 11

add dilute acid

effervescence observed. gas given off forms white ppt with limewater. carbon dioxide is produced.