Tests for ions Flashcards Preview

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Flashcards in Tests for ions Deck (18):
1

what piece of equipment is used to test for metal ions?

a platinum wire loop

2

lithium flame test

crimson-red

3

sodium flame test

yellowy-orange

4

potassium flame test

lilac

5

calcium flame test

brick-red

6

many metal hydroxides are...

insoluble

7

what is added to test for metal ions?

sodium hydroxide

8

colour of copper hydroxide precipitate

blue

9

colour of iron(2) hydroxide precipitate

sludgy green

10

colour of iron (3) hydroxide precipitate

reddish-brown

11

what is added to test for ammonium ions?

sodium hydroxide

12

what is added to test for carbonates?

dilute hydrochloric acid

13

what is added to test for sulphates?

dilute hydrochloric acid
then barium chloride solution

14

what is added to test for halides?

dilute nitric acid
silver nitrate solution

15

what colour is the precipitate that shows that sulphates are present?

white

16

silver chloride precipitate colour

white

17

silver bromide precipitate colour

cream

18

silver iodide precipitate colour

yellow