A boy sets up the circuit and passes electric current for some time through it. What will he observed?
Answers
Answer:
Explanation : ELECTROCHEMISTRY revision notes on electrolysis, cells, experimental methods, apparatus, batteries, fuel cells and industrial applications of the electrolysis of copper sulfate solution including electroplating. Full descriptions of the apparatus and detailed explanations are provided for the electrolysis of copper sulfate solution with carbon or copper electrodes.
4. The electrolysis of copper(II) sulfate solution
A simple method of investigating the electrolysis of copper(II) sulfate solution is described. The formation of the products of electrolysing aqueous copper sulfate is fully explained with the appropriate electrode equations. Two experiments are described (a) with inert carbon electrodes and (ii) using copper electrodes. The process of electroplating is also described. What are the products of the electrolysis of copper sulfate solution?
Reminders: Electrolysis (of copper sulfate) is a way of splitting up (decomposition) of the compound (copper sulfate) using electrical energy. The electrical energy comes from a d.c. (direct current) battery or power pack supply. A conducting liquid, containing ions, called the electrolyte (copper sulfate solution), must contain the compound (copper sulfate) that is being broken down. The electricity must flow through electrodes dipped into the electrolyte to complete the electrical circuit with the battery. Electrolysis can only happen when the circuit is complete, and an electrical current (electricity) is flowing, then the products of electrolysing aqueous copper(II) sulfate solution are released on the electrode surfaces where they can be collected. Electrolysis always involves a flow of electrons in the external wires and electrodes and a flow of ions in the electrolyte and there is always a reduction at the negative cathode electrode (which attracts positive ions, cations) and an oxidation at the positive anode electrode (which attracts negative ions, anions) and it is the ions which are discharged to give the products. These revision notes on the electrolysis of copper sulfate solution should prove useful for the new AQA chemistry, Edexcel chemistry & OCR chemistry GCSE (9–1, 9-5 & 5-1) science courses.
Answer:
Explanation:he will observe that the copper plate will be a clean reddish brownish plate once it is taken out.
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