Question

Exactly required concentration can be prepared from chemical reagent is called​

Answer 1

Answer:

In analytical chemistry, a standard solution is a solution containing a precisely known concentration of an element or a substance. A known weight of solute is dissolved to make a specific volume. It is prepared using a standard substance, such as a primary standard.

Answer 2

Standard solution is formed when exactly required concentration prepared from chemical reagent.

Detailed Explanation

• A solution containing known concentration of substances is called standard solution.
• The concentration of solution remains constant always.
• The exact concentration is formed by dissolving required amount of solute in a solvent and dilute it to reach final volume.
• Primary standard is used to prepare standard solution.
• Example: For silver nitrate solution, sodium chloride acts as primary standard.