Question

Explain which indicator is most useful? What colour does it give with water ?

Answer 1

Answer:

Acids cause universal indicator solution to change from green toward red. Bases cause universal indicator to change from green toward purple. Water molecules (H2O) can interact with one another to form H3O+ ions and OH− ions.

Answer 2

Answer: Acids cause universal indicator solution to change from green toward red. Bases cause universal indicator to change from green toward purple. Water molecules (H2O) can interact with one another to form H3O+ ions and OH− ions.