Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
secondary 3 | Chemistry
One Answer Below
Anyone can contribute an answer, even non-tutors.
pls help ^_^
Date Posted: 6 years ago
Views: 525
See 1 Answer
which one is ans for a) and b)?
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.
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.
oh okay thank you :)
360 Tutoring Program