Question
What colour would you expect lemon juice to turn universal indicator?
Answer
4.6
(208 Votes)
Martha
Veteran · Tutor for 12 years
Answer
Red
Explanation
Universal indicator is a mixture of dyes substance that exhibits different colors in the presence of acids and bases. When acidic substance is added to it, its color changes to red while bases turns it to purple. Lemon juice, being a common "citrus fruit," is rich in citric acid. Given that lemon juice is acidic, we would expect the color of the universal indicator to turn to red when lemon juice is added.