How can you identify an acid and an alkali?

Answer 1

You identify acids and alkalis using indicators. Indicators are substances which turns a particular colour for acids and another for bases. E.g. litmus, (acid-red, alkali-green) and phenolphthalein. Indicators have a certain pH value. You can only use a particular indicator of a suitable pH value for a particular acid-base reaction

Answer 2

The main way to check whether a substance is acid or alkaline is to use a universal indicator. A neutral substance has a PH of 7. An acidic substance has a PH below 7 while an Alkaline substance has a PH above 7.

Answer 3

test on a PH scale paper and look at the colour. green is neutral red is acidic and purple is alkali

:D

you can aslo use litmus indicator

blue alkali purple neutral and red acid

Answer 4

an acid will have a pH of 1-6 and an alkali will have a pH of 8-14 and pH7 is neutral . neutral is what you get when you add a acid to a alkali

Answer 5

use litmus paper or universal indicator Red = acid Blue = alkaline

Answer 6

You can tell the diference by it's PH scale. If it is below 7, it is an acid. If it is above 7, it is alkali.

Answer 7

pH test