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The setup below was used to prepare and collect a dry sample of gas X. Study it and answer the questions that follow.

The setup below was used to prepare and collect a dry sample of gas X. Study it and answer
the questions that follow.

(a) Identify gas X
(b) Complete the setup to show how gas X is dried and collected.
(c) Write an equation for the above reaction.
(d) An aqueous solution of zinc sulphate is electrolysed using platinum electrodes. State
and explain what happens to the concentration of zinc sulphate
(e) State the ratio of the products of the anode and cathode using the equations
(f) Give one use of electrolysis
(g) What is anodization of aluminium

Answers

(a) gas X-chlorine.

(c) 16Hcl(l) + 2KMnO₇(s)-------> 5Cl₂(g) +2Kcl(aq))+2Mncl₂(aq) +8H₂O(l).
(d) It increases; water elements are discharged at the electrodes.

(f) - Electroplating
- Extraction of metals
- Purification of copper
(g) The corrosion of articles made of aluminum prevented by reinforcing their
aluminium oxide coating during electrolysis of dilute sulphuric acid and aluminium
article used as the anode.

sharon kalunda answered the question on May 20, 2019 at 09:14

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