S

Standard Solution

c(std) = n/V; calibrated against primary standard
Quick Reference
Formula / Notationc(std) = n/V; calibrated against primary standard
Also Known AsStandardised solution, titrant solution, known-concentration solution

What is Standard Solution?

A solution of precisely known concentration used in analytical chemistry, especially in titrations. Primary standard solutions are made by dissolving a known mass of a primary standard substance. Secondary standard solutions are prepared by standardizing against a primary standard.

Formula & Notation

c(std) = n/V; calibrated against primary standard

Other Names / Synonyms: Standardised solution, titrant solution, known-concentration solution

Properties & Characteristics

A standard solution is a solution of precisely known concentration used in titrimetric analysis. It can be prepared by dissolving a weighed primary standard in a measured volume of solvent, or by standardising against a primary standard. Standard solutions are used as titrants to determine unknown concentrations. They must be stable and their concentration must remain constant during storage.

Uses & Applications

Standard solutions are used in acid-base, redox, complexometric, and precipitation titrations for quantitative analysis. In pharmaceutical quality control, standard solutions verify the concentration of drug substances. Environmental analysis uses standard solutions to calibrate analytical instruments.

Safety Information

Standard solutions of strong acids, bases, or oxidising agents must be handled with appropriate care. Proper labelling and storage conditions are essential to maintain accuracy and prevent accidents.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Standard Solution
Formula c(std) = n/V; calibrated against primary standard
Synonyms Standardised solution, titrant solution, known-concentration solution

Frequently Asked Questions

A solution of precisely known concentration used in analytical chemistry, especially in titrations. Primary standard solutions are made by dissolving a known mass of a primary standard substance. Secondary standard solutions are prepared by standardizing against a primary standard.

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