Chemistry
Grade-8
Easy
Question
Which out of the following statements is true about the above given reaction?
2NaCl→2Na+Cl2
- Sodium chloride decomposes only after 200oC
- Sodium and chloride also can be separated by evaporation of NaCl
- The given chemical reaction is reversible
- The electricity is passed in the molten sodium chloride to get sodium and chlorine
Hint:
The NaCl molecule breaks downs into its components.
The correct answer is: The electricity is passed in the molten sodium chloride to get sodium and chlorine
- When an electric current is passed through molten sodium chloride, Na+ ions are reduced at the cathode (cathode), thus sodium is deposited at the cathode, and Cl- is deposited at the cathode.
- As the ions are oxidized at the positive electrode (anode), chlorine gas is formed at the anode.
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