Question

2.Completion of a chemical reaction is indicated by...showing sharp colour change

a) An indicator
b) Catalyst
c) Acid
d)Base

please solve the question and give me correct answer for this question

explain your answer is correct.​

Answer 1

Answer:

a) An Indicator

Explanation: An indicator is a chemical substance which indicates "completion of the reacting solution by a changes in its colour".

For eg. Fluroescein is used to detect the completion of reaction between silver ion and chloride ion.

Hope this helps you :)