1. Is the pH of a hydrochloric acid solution greater than or less than the PH of water? HCI diluted pH = ? HCI concentrated pH = ? 2. Which HCI solution has more H? diluted or concentrated? Which HCI solution is more Acidic? diluted or concentrated? 3. As the solution becomes more Acidic, does pH value increase or decrease? Solution Q.No 1 The pH of Hcl is less than the pH of water (7.0). Hcl diluted pH = 3.01 (1mM Hcl) Hcl concentrated pH = -0.5 (Hcl/Kg) Q.No 2 Diluted Hcl solution has more H than concentrated Hcl Concentrated Hcl solution is highly acidic than diluted Hcl. Q.No 3 When the solution is highly acidic in nature pH value decreased. pH scale ranges from 0 to 14. pH 7 is neutral (water); a pH less than 7 is acidic and greater than 7 is basic..