Question

What is the pH number of hydrochloric acid?

• A. Below 7
• B. Above 7
• C. 7
• D. Between 8 and 10

Answer 1

The correct option is A Below 7

The pH of acids is given by the pH scale from 1-7. Strength of acids increases by moving down the scale from 7 to 1. High acidity ranks as 1 on the pH scale and 7 are neutral. HCl is highly acidic so it has pH less than 7 while on this scale basicity increases going from 7 to 14. So all the acids have pH under 7.

Option A is correct.