Question

The best example to prove that when we put a substance in acid or base it changes it smell then the substances?

Answer 1

An Olfactory indicator is defined as a substance whose smell varies when it is mixed with an acidic or basic solution.Such substances can be used in the laboratory to test whether a solution is a base or an acid, and this process is calledolfactory titration. All onion,clove oil and vanilla extract are examples