A visual indicator is a “marker” that helps users quickly locate an item that has an important distinctive attribute within a list of otherwise similar objects. Indicators on ecommerce websites are often used to denote exclusive products or items on sale, as seen on the mobile screenshot above of REI.com.

What is a visual indicator what is its relationship to acids and bases?

are the predominate species. The indicator changes color when the pH is between pKa – 1 and pKa + 1, changing from yellow to orange to red (or from red to orange to yellow).

Which of the following is an example of visual indicator?

Alcoholic solution of phenolphthalein (1%) has been frequently applied in titration as a pH visual indicator to reveal information about other compounds, including mineral acids, organic acids, and most alkalis.