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secondary 3 | Chemistry
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swxtz
Swxtz

secondary 3 chevron_right Chemistry chevron_right Singapore

pls help ^_^

Date Posted: 9 months ago
Views: 86

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Michael
Michael's answer
11 answers (Tutor Details)
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swxtz
Swxtz
9 months ago
which one is ans for a) and b)?
Michael
Michael
9 months ago
The above is for A

For B, my apology I miss out, here's the answer.
Prepare three test tube in a test tube rack, add metal of each sample to test tube respectatively. Add sodium hydroxide solution to each of the test tube.

Solutions containing copper(II) ions will form a blue precipitate with sodium hydroxide. With the colour, we will know each contain copper(ii) ion.
swxtz
Swxtz
9 months ago
oh okay thank you :)