To determine the pH of a solution using a pH indicator paper, you need a Colour key.
What is pH value and colour key?
- pH is a measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base. pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the water.
- pH indicators are weak acids that exist as natural dyes and indicate the concentration of H+ (H3O+) ions in a solution via color change. A pH value is determined from the negative logarithm of this concentration and is used to indicate the acidic, basic, or neutral character of the substance you are testing.
Colour key is need determine the pH of a solution.
To learn more about pH value and colour key refer:https://brainly.com/question/13576450
#SPJ2
