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Factors Affecting Electrolysis

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solid NaCl is an insulator but molten NaCl is a good conductor of electricity

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Solution

Sodium Chloride has a crystalline structure in which the positive and negative ions are held by very strong electrostatic forces of attraction. Hence there are no free electrons to move because of which it is an insulator. However molten NaCl is in liquid state in which the ions are free to move. Therefore in molten state, the charge is carried by the ions and hence NaCl conducts electricity in molten state.

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Q. Crystalline sodium chloride is a bad conductor of electricity while molten NaCl and its aqueous solution conduct electricity. This is because:

Q. I. The conductivity of molten

N a C l

is due to movement of

N a^{+}

C l^{-}

ions.
II. Solid

N a C l

is also conductor of electricity
III. Molten sodium is a good conductor because of mobile electrons.

Which of the above statements are correct?

Solid $N a C l$ is a bad conductor of electricity because :

Q. In the solid-state,

N a C l

doesn't conduct electricity but

N a C l

in molten form conducts electricity.
If True enter 1 else if False enter 0.

N a C l

is not a conductor of electricity in solid state whereas it does conduct electricity in aqueous solution as well as in molten state. Reason: In solid

N a C l

, the ions have fixed positions in the lattice structure and there are no free ions but in aqueous solution or molten state, the ions can move freely and thus conduct electricity.

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