Question

5. Why primary standard substances are used to make standard solutions ?​

Answer 1

Answer:

hope helps u :)

Explanation:

Primary standards are typically used in titration to determine an unknown concentration and in other analytical chemistry techniques. ... The reaction confirms that the solution is at a specific concentration. Primary standards are often used to make standard solutions, solutions with a precisely known concentration.

Answer 2

Answer:

Primary standards are often used to make standard solutions, solutions with a precisely known concentration.

A good primary standard meets the following criteria:

Has a high level of purity

Has low reactivity (high stability)