Please can someone help me I don't know what to do... Please I beg you, I will mark Brainliest A student carries out the electrolysis of molten lead(ii) iodide in a fume cupboard. a Draw a diagram to show a suitable apparatus the student could use to carry out this experiment. b Write anode and cathode reactions to represent the processes taking place during the electrolysis. c Why does this experiment need to be carried out in a fume cupboard?
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Answer:
A simple method of investigating the electrolysis of molten lead(II) bromide is described. The formation of the products of electrolysing molten lead bromide is fully explained with the appropriate electrode equations. What are the products of the electrolysis of molten lead bromide?
A simple method of investigating the electrolysis of molten lead(II) bromide is described. The formation of the products of electrolysing molten lead bromide is fully explained with the appropriate electrode equations. What are the products of the electrolysis of molten lead bromide?Reminders: Electrolysis (of lead bromide) is a way of splitting up (decomposition) of the compound (lead bromide) 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 (molten lead bromide), must contain the compound (lead bromide) 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 molten lead(II) bromide 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 molten lead bromide and other molten salts should prove useful for the new AQA chemistry, Edexcel chemistry & OCR chemistry GCSE (9–1, 9-5 & 5-1) science courses.
Answer:
There is also a list of links to revision notes on the application of electrolysis ... and bromide ions Br– to carry the current during the electrolysis process. ... The electrolysis will only take place when electricity is passed through the molten lead ... (a) The negative cathode electrode reaction for the electrolysis of molten lead(II) ...Molten lead bromide, PbBr 2(l), is an electrolyte. During electrolysis: Pb 2+ ions gain electrons at the cathode and become Pb atoms. Br - ions lose electrons at the anode and become Br atoms, which pair up to form Br 2 molecules.
The reaction at the anode is oxidation and that at the cathode is reduction. The electrons are supplied by the species getting oxidized. They move from anode to the cathode in the external circuit.
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