Electrolysis of HCl(aq) gives hydrogen at cathode.

Explanation

**Step-by-Step Solution:**

1. **Understanding Electrolysis**: Electrolysis is a process that uses electrical energy to drive a non-spontaneous chemical reaction. In this case, we are looking at the electrolysis of hydrochloric acid (HCl) in aqueous solution.

2. **Setting Up the Electrolysis Apparatus**: We have a container with HCl(aq) and two electrodes: an anode (positive electrode) and a cathode (negative electrode). The electrodes are connected to an external power source.

3. **Identifying Ions in Solution**: In the HCl solution, the dissociation of HCl produces H⁺ ions and Cl⁻ ions. Additionally, water (H₂O) is present, which can also participate in the electrolysis process.

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