The pH of a 0.01 M HCl solution is:

1. HCl is a strong acid; fully dissociates: [H⁺] = 0.01 M = 10⁻². 2. pH = −log [H⁺] = −log(10⁻²) = 2. 3. Pure water has pH 7; pH 1 would be 0.1 M HCl. _Source: NCERT Class 11 Chem Ch 7 §7.10 pH Scale_