When current is passed through molten NaCl i.e. sodium chloride, it decomposes into sodium and chlorine gas. Both sodium and chlorine gas move towards the electrode opposite to their own charge and either loses an electron or gains one.
Why does Molten sodium chloride decomposes on the passage of electric current?
This is a thermal decomposition reaction beacuse here NaCl is broken down into Na and Cl due to electricity. In combination reaction, two or more compound is added to form a single complex compound. This is a combination or addition reaction because here Na and Cl is added to form single compound NaCl.
How does the molten sodium chloride conduct electricity?
Solid ionic compounds do not conduct electricity because the ions are held firmly in place. The ions cannot move to conduct the electric current . But when an ionic compound melts, the charged ions are free to move. Therefore, molten ionic compounds do conduct electricity.
Do molten NaCl conducts electricity?
So a molten salt powers electricity. Hence, molten sodium chloride conducts electricity due to the presence of free ions.
Why is sodium chloride conductive molten?
As the motility of individual atoms or molecules in liquid state is far greater than solid, the ions (Na+&Cl−) are free to move and therefore can act as charge carriers. Hence molten sodium chloride is a good conductor of electricity because of free ions.
When electric current is passed through molten common salt sodium metal is deposited at?
Sodium is deposited at the positive electrode and chlorine is deposited at the negative electrode.
What happens during electrolysis of sodium chloride?
As shown above, the electrolysis of sodium chloride solution will produce chlorine gas at the anode and hydrogen gas at the cathode. During the electrolysis, hydrogen and chloride ions are removed from solution whereas sodium and hydroxide ions are left behind in solution.
What happens to sodium chloride when heated?
The boiling point of sodium chloride is 1465°C (2669°F). At even higher temperatures the gaseous sodium chloride will dissociate into a plasma of sodium ions and chloride ions. When sodium chloride is heated it gets moisture free, then it melts at 801°C and on continuously heating it boils at 1465°C temperature.
What happens when nacl melts?
When it melts, sodium chloride undergoes electrolysis, which involves conduction of electricity because of the movement and discharge of the ions. In the process, sodium and chlorine are produced. This is a chemical change rather than a physical process.
What type of particles exist in molten sodium chloride?
Sodium chloride contains sodium ions, which have a positive charge, and chloride ions, which have a negative charge.
Why flow of current through sodium chloride is possible only when it is in molten state not when it is in solid state?
In the solid state, ionic compounds such as sodium chloride have their ions fixed in position and therefore these ions cannot move so solid ionic compounds cannot conduct electricity. However in the molten state, ions in ionic compounds are free to flow and therefore molten sodium chloride can conduct electricity.
Why does molten NaCl conduct electricity Class 10?
Molten NaCl contains Na+ and Cl– ions which are free to move hence it conducts electricity.
Which of the following will conduct electricity when molten?
Ionic compounds conduct electricity when molten (liquid) or in aqueous solution (dissolved in water), because their ions are free to move from place to place. Ionic compounds cannot conduct electricity when solid, as their ions are held in fixed positions and cannot move.