Indicators and pH

At the end of this activity, students should be able to:
– state the purpose of indicators
– determine the pH of a solution using an indicator
– determine the acidity or alkalinity of a solution using the pH scale
– indicate the colours corresponding to alkaline, neutral and acidic solutions on the pH scale
– identify strong and weak acids and strong and weak alkalis on the basis of the pH value of their solutions
– discuss the applications of pH measurements.