On the pH scale, what colour indicates a strong alkali?RedPurpleYellowBlue

On the pH scale, a strong alkali is indicated by the color blue. This is because the pH scale typically ranges from 0 to 14, with 7 being neutral. Anything below 7 is considered acidic and is usually represented by the colors red to yellow. Anything above 7 is considered alkaline or basic, and is usually represented by the colors blue to purple. Therefore, a strong alkali, which would have a pH close to 14, would be represented by the color blue.