Tests For Ions

Question 1

Flame colour for lithium ions (Li+)?

Answer 1

Crimson

Question 2

Flame colour for sodium ions (Na+)?

Answer 2

Yellow/orange

Question 3

Flame colour for potassium ions (K+)?

Answer 3

Lilac

Question 4

What is the test for positively charged cations?

Answer 4

Flame tests

Question 5

Test for copper ions and positive result?

Answer 5

Sodium hydroxide, blue ppt

Question 6

Test for Iron(II) (Fe2+) and positive result?

Answer 6

Sodium hydroxide, green/dark brown ppt

Question 7

Test for Iron(III) (Fe3+) and positive result?

Answer 7

Sodium hydroxide, orange/brown ppt

Question 8

Test for Aluminium(III) (Al3+) and positive result?

Answer 8

Sodium hydroxide, white ppt

Question 9

Test for magnesium ions and positive result?

Answer 9

Sodium hydroxide, white ppt

Question 10

Tests for halide ions?

Answer 10

Silver nitrate and nitric acid

Question 11

Test for sulfate ions and positive result?

Answer 11

Barium chloride and HCl, white ppt

Question 12

Test for carbonate ions and positive result

Answer 12

HCl, bubble through limewater, white ppt

Question 13

Test and positive result for chloride ions?

Answer 13

Silver nitrate and nitric acid, white ppt

Question 14

Test and positive result for bromide ions?

Answer 14

Silver nitrate and nitric acid, cream ppt

Question 15

Test and positive result for iodide ions?

Answer 15

Silver nitrate and nitric acid, yellow ppt