Table of Contents
- 1 What would you observe during electrolysis?
- 2 Do we get same product during electrolysis?
- 3 What do you observe at the cathode and at the anode during electrolysis of molten lead bromide?
- 4 How do you know what is produced at the anode?
- 5 What are the factors on which products of electrolysis depends?
- 6 What does the cathode do to the ions?
What would you observe during electrolysis?
Positively charged ions move to the negative electrode during electrolysis. They receive electrons and are reduced . Negatively charged ions move to the positive electrode during electrolysis. They lose electrons and are oxidised .
Do we get same product during electrolysis?
This results in chemical reactions at the electrodes and the separation of materials. Two commonly used methods of electrolysis involve molten sodium chloride and aqueous sodium chloride. You might think that both methods would give you the same products, but this not the case.
What do you observe at the cathode and at the anode during electrolysis of molten lead bromide?
During the electrolysis process, Pb2+ ions gain electrons at the cathode and become Pb atoms. Now this bromine atom combines to form a bromine molecule. Therefore a silver-grey deposit at the cathode and brown fumes at the anode are observed. So, the correct answer is Option C .
What do you observe at the cathode and at the anode?
i) What do you observe at the cathode and at the anode? i) Red metal copper deposits at the cathode and colourless odourless gas oxygen at the anode.
What is produced at the cathode during electrolysis?
hydrogen is produced at the cathode if the metal is more reactive than hydrogen.
How do you know what is produced at the anode?
Either oxygen or a non-metal from the electrolyte can be produced at the anode: for the most common compounds oxygen is produced (from the hydroxide ions)…At the anode.
| Negative ion | Element given off at anode |
|---|---|
| Sulfate, SO 4 2- | Oxygen, O 2 |
What are the factors on which products of electrolysis depends?
Factors Affecting Products of Electrolysis are as follows:
- Products of electrolysis depend on the material being electrolyzed.
- Products of electrolysis depend on the nature of electrodes too.
- Various oxidising and reducing species present in the electrolytic cell do affect the products of electrolysis.
What does the cathode do to the ions?
The cathode is an electron donor and can cause reduction to occur. The negatively charged electrode will attract positive ions (cations) toward it from the solution. It can donate some of its excess electrons to such cations or to other species in the liquid being electrolyzed.