Answer the following questions given below:
Varsha wanted to test whether acids conduct electricity. He set up a simple electrical circuit using a \(6\) - volt battery, a bulb, connecting wires and two electrodes. First, he passed dry hydrogen chloride (\(HCl\)) gas between the electrodes and observed that the bulb did not glow. Then he passed the same \(HCl\) gas through water, forming an aqueous solution, and repeated the experiment using the same circuit. This time, the bulb started glowing, indicating the flow of electric current through the solution. Varsha realised that the behaviour of the acid was different in the dry state and in the aqueous state.
1. Electrical conductivity in aqueous solutions of acid or bases is mainly due to:
2. Why does the bulb glow brighter in concentrated \(HCl\) solution compared to dilute \(HCl\) solution?
3. Which chemical equation correctly represents the ionisation of a \(NaOH\) in water?