tests

Question 1

what flame colour is Li+

Answer 1

red

Question 2

what flame colour is Na+

Answer 2

yellow

Question 3

what flame is Ca2+

Answer 3

orange

Question 4

what flame colour is K+

Answer 4

lilac

Question 5

what flame colour is Cu2+

Answer 5

green

Question 6

what’s the test for Ca2+, Mg2+, Al3+, Cu2+, Fe2+, Fe3+

Answer 6

using NaOH

Question 7

what does Ca2+/ Mg2+ form with NaOH

Answer 7

white precipitate
Ca(OH)2 / Mg(OH)2

Question 8

what does Al3+ form with NaOH

Answer 8

white precipitate
Al(OH)3

Question 9

what does Cu2+ form with NaOH

Answer 9

blue precipitate
Cu(OH)2

Question 10

what does Fe2+ form with NaOH

Answer 10

green precipitate
Fe(OH)2

Question 11

what does Fe3+ form with NaOH

Answer 11

brown precipitate
Fe(OH)3

Question 12

what is the test for CO3 2-
and results

Answer 12

acid barium chloride
forks bubbles and white precipitate

Question 13

what is the test for SO4 2-
and results

Answer 13

acid and barium chloride
forms white precipitate