How can we determine if a substance is acidic or basic?

Question

How can we determine if a substance is acidic or basic?

Answer 1

If you cant do a pH test try using the substsnce to clean somthing like Brass. Its said that only acidic substances can clean Brass properly and make it shine. Try this get a lemon cut it in half get something Brass clean one side with lemon and make it shine then clean the other side with the substance you think may be acidic and see if the results match. I hope this answer helps you.

Answer 2

Different ways

1. pH paper - changes color depends on the pH of the solution

2. pH indicator -chemical substance which changes color depending on the pH of the solution

3. pH electrode  - measure pH by an electrode

4. put some NaHCO3 - if you effervescence (gas liberation) - then it is an acid, otherwise it is a base.

5. Put Al(NO3)3 in the solution - if a ppt appears then it is a base. Al(OH)3

The above methods have some limitations.

Answer 3

Dam a bit on your toung.

Answer 4

Give it a pH test, of course.