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प्रश्न
Give reasons why Although copper is a good conductor of electricity, it is a non-electrolyte.
उत्तर
Copper has no mobile electrons in the solid state and an electrolyte should dissociate into oppositely charged ions to conduct electricity. Hence, copper is a non-electrolyte.
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संबंधित प्रश्न
Name the gas that is produced in each of the given case :
At the anode during the electrolysis of acidified water.
Choosing only words from the following list, write down the appropriate words to fill in the blanks (a) to (e) below:
anions, anode, cathode, cations, electrode, electrolyte, nickel, voltameter.
The electroplating of an article with nickel requires an (a) ______ which must be a solution containing (b) ______ ions. The article to be plated is placed as the (c) ______ of the cell in which the plating is carried out. The (d) ______ of the cell is made from pure nickel. The ions that are attracted to the negative electrode and discharged are called (e) ______.
Explain the term : Anode mud
The following Question refer to the electrolysis of copper sulphate solution with copper electrodes:
(a) Compare the change in mass of the anode
(b) What is seen to happen to the colour of the copper sulphate solution if platinum electrodes are used? Explain the observation.
(c) What is the practical application of the electrolysis of copper sulphate solution? Briefly, describe one such application.
What should be the physical state of lead bromide if it is to conduct electricity?
What particles are present in pure lead bromide?
What kind of particles will be found in a liquid compound which is a non- electrolyte?
A solution contains magnesium ions (Mg+2), iron (II) ions (Fe+2) and copper ions (Cu+2). On passing an electric current through this solution, which ions will be the first to be discharged at the cathode? Write the equation for the cathode reaction.
M is a metal above hydrogen in the activity series and its oxide has the formula M2O. The oxide when dissolved in water forms the corresponding hydroxide which is a good conductor of electricity. In the above context answer the following:
- What kind of combination exists between M and O?
- How many electrons are there in the outermost shell of M?
- Name the group to which M belongs.
- State the reaction taking place at the cathode.
- Name the product at the anode.
Copper sulphate solution is electrolysed using copper electrodes.
Which electrode [cathode or anode] is the oxidizing electrode? Why?
