Question

A student tests the pH of pure water using a pH paper. It shows green colour. If a
pH paper is used after adding lemon juice to water, what colour will he observe?
(Green / Red / Yellow)

Answer 1

Hey...
Your answer is red.

Hope this is helpful for you.

Answer 2

Dear Student,

◆ Answer -

Student will observe red colour.

● Explanation -

• Initially student observes green colour of pH paper in water because of its neutral nature.
• Presence of citric acid in lemon juice makes its aqueous mixture acidic.
• As pH paper changes to red color in acidic solution, student will observe red colour of pH paper.

Thanks dear...