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Question
Cations are formed by ______ of electrons and anions are formed by ______ of electrons.
Options
loss
gain
Solution
Cations are formed by loss of electrons and anions are formed by gain of electrons.
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RELATED QUESTIONS
Give appropriate scientific reasons for Electrolysis is of molten lead bromide is considered to be a redox reaction.
(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).
Define the term : Electrolysis
Explain, why electrolysis is an example of redox reaction?
Write down the word or phrase from the given options that will correctly fill in the blanks in the following sentence:
We can expect that pure water _______ normally conduct electricity.
Copy and complete the following table which refers to two practical applications of electrolysis.
| Anode | Electrolyte | Cathode | |
| Silver plating of a spoon | Solution of potassium argentocyanide | ||
| Purification of copper |
During the electrolysis of molten lead bromide, which of the following takes place?
Electrolysis is the passage of ______ through a liquid or a solution accompanied by a ______ change.
X - \[\ce{HCl <=> H^{1+} + Cl-}\] (in solution state)
Y - \[\ce{PbBr2 <=> Pb^{2+} + 2Br^{1-}}\] (in molten state)
From the above reaction X or Y, identify the reaction which exhibit:
electrolytic dissociation
X - \[\ce{HCl <=> H^{1+} + Cl-}\] (in solution state)
Y - \[\ce{PbBr2 <=> Pb^{2+} + 2Br^{1-}}\] (in molten state)
From the above reaction X or Y, identify the reaction which exhibit:
ionization
