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Electric Conduction of Ionic Compounds

In a book it ...

Question

In a book it is written that ions in ionic compounds become free to move in aqueous solution i.e NaCl becomes Na+ and Cl- in aqueous solution and the ions become free to move. Is it true?

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Solution

yes they are free
They are free to move in aqueous solutions and in molten liquids. However, the ions are in fixed positions in solid ionic compounds - they cannot move around, so electrolysis does not work in solids.

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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.

Q. Assertion:

H C l

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H C l

H^{+}

C l^{-}

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Q. An acid produces free

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Q. Statement 1: During electrolysis of aqueous solution of

N a C l, O H^{-}

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Statement 2: Standard potential of

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The number of ions formed in aqueous solution by the compound $[C o (N H_{3})_{4} C l_{2}] C l$ is:

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