With the help of labelled diagrams, describe an activity to show that acids produce ions only in aqueous solutions.

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Solution

Take an acid (say HCl) in a beaker. Add water. Dip two graphite rods into it. Complete the circuit as shown below:

Now switch on the circuit. It will be seen that the pointer of ammeter moves. This shows that current is passing through the circuit. This is possible when ions are present in the solution.

Now take dry HCl in acetone or any other organic liquid. Arrange the system as before. It will be seen that pointer of the ammeter does not move when circuit is completed. This means no current is passing and solution does not contain ions. Hence, it is inferred that acids produce ions in aqueous solution only.

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