Question

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

• A. $HCl$
• B. $KOH$
• C. $H_{2}S{O}_4$
• D. $H_{2}O$

Answer 1

The correct option is B $KOH$

- 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. $HCl$ and $H_{2}S{O}_4$ 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. KOH solution has a pH higher than 7.
- Thus, out of all the options, KOH has the highest pH.