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प्रश्न
Element X is a metal with a valency 2. Element Y is a non-metal with a valency 3.
If Y is a diatomic gas, write the equation for the direct combination of X and Y to form a compound.
उत्तर
\[\ce{Y2 + 3X → X3Y2}\]
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संबंधित प्रश्न
Write the equation taking place at the anode
Give reason for the following:
A graphite anode is preferred to other inert electrodes during the electrolysis of fused lead bromide.
Write down the word or phrase from the bracket that will correctly fill in the blank in the following sentence:
We can expect that pure water ________________ (will / will not) normally conduct electricity.
(a) Copy and complete the following table, which refers to two practical applications of electrolysis.
| Anode | Electrolyte | Cathode | |
| (i) Silver plating of a spoon | A solution of potassium argentocyanide | ||
| (ii) Purification of copper | |||
| (iii) Extraction of sodium |
(b) Write the equation taking place at the anode for Q. (a).
Give one example of a substance which contain :
molecules only
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.
To electroplate 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)________.
Copy and complete the following sentence :
With platinum electrodes, hydrogen is liberated at the ______and oxygen at the _________ during the electrolysis of acidified water.
Name the gas released at the cathode when acidulated water is electrolyzed.
Pure water consists entirely of ______.
Give reason for the following:
Potassium is not extracted by electrolysis of its aqueous salt solution.
