Question

Which statement best describes the use of a chemical indicator in a titration?

a. a measure of the quantity of acid dissolved in water designated by molarity
b. an intrinsic characteristic of a particular acid, not related to concentration
c. the amount of hydrogen ions present in the acid
d. the amount of hydroxide ions present in a solution

Answer 1

c. The amount of hydrogen ions present in the acid.

Step-by-step explanation:

A chemical indicator is a substance that can indicate a change in a system. For example, an acid-base indicator indicates when the solution changes its pH from acid to base, or from base to acid. It generally occurs by a change in the color of the solution.

The titration is used to determinate the concentration of an acid or a base solution, using another with know concentration. It happens by the neutralization between the acid and base. When it occurs, the pH change, and the indicator change it's color. So, it's possible to determinate the amount of hydrogen ions present in the acid, which will react with the hydroxides ions off the base in the neutralization.

Answer 2

I believe the correct answer from the choices listed above is option A. The statement that best describes the use of chemical indicator in a titration would be that it measures the quantity of acid dissolved in water designated by molarity. A titration is a method of analysis that will allow you to determine the precise endpoint of a reaction .