Question
Universal indicator is used to measure the pH of a solution. Draw one line from each pH to the colour of universal indicator in a solution with that pH. pH square 7 Colour of universal indicator Blue Green Purple Red Yellow square 7 [2 marks]
Answer
4.6
(317 Votes)
Bernadette
Master · Tutor for 5 years
Answer
### - pH 1-3: Red### - pH 4-6: Yellow### - pH 7: Green### - pH 8-11: Blue### - pH 12-14: Purple
Explanation
## Step 1: Understand the pH Scale and Universal Indicator Colors### The pH scale ranges from 0 to 14. A universal indicator changes color depending on the pH of the solution. Specific colors correspond to specific pH values.## Step 2: Match pH Values to Colors### Identify the color corresponding to common pH values using the universal indicator chart.- pH 1-3: Red- pH 4-6: Yellow- pH 7: Green- pH 8-11: Blue- pH 12-14: Purple