Question

From the given options select the one with the highest pH value.

• A. $\text{HCl}$
• B. ${\text{H}}_2{\text{SO}}_4$
• C. ${\text{H}}_2\text{O}$
• D. $\text{NaOH}$

Answer 1

The correct option is D $\text{NaOH}$

- pH scale ranges from 0 to 14. It measures how acidic or basic a solution is.

- Acids have pH range from 0 to 7. E.g. $\text{HCl}$ and ${\text{H}}_2{\text{SO}}_4$ have pH between 0 to 7.

- Neutral solutions have a pH value of 7. E.g. distilled water has pH 7.

- Bases have pH range from 7 to 14. E.g. NaOH solution has pH higher than 7.

- Thus, out of all options, NaOH has the highest pH.