Web Results

pediaa.com/difference-between-primary-and-secondary...

Standard solutions can be divided into two groups as primary standard solutions and secondary standard solutions. Primary standard solutions are solutions made out of primary standard substances. Secondary standard solutions are not as pure as primary standard solutions. Purity is the main difference between primary and secondary standard solution.

www.quora.com/What-are-the-examples-of-primary-and...

A primary standard is a reagent that is extremely pure, stable, it not a hydrate/has no water of hydration, and has a high molecular weight. Examples of primary standards for titration of acids are: >> sodium carbonate: Na2CO3, mol wt. = 105.99 g/...

www.quora.com/What-is-the-difference-between-primary-and...

A secondary standard solution is a chemical term that refers to a solution that has its concentration measured by titration with a primary standard solution, The amount of chemical reactants in the primary standard solution is known beforehand.

www.thoughtco.com/definition-of-primary-standard-and...

A secondary standard is a chemical that has been standardized against a primary standard for use in a specific analysis. Secondary standards are commonly used to calibrate analytical methods. NaOH, once its concentration has been validated through the use of a primary standard, is often used as a secondary standard.

paperap.com/paper-on-primary-secondary-standard-solutions

Primary standards’ reactivity with the surrounding is low in oppose to secondary standards where it is high and react with the water molecules in the atmosphere. The function of the both standards is to provide as a reference to be used when standardising a solution. Initially, a primary standard is used to standardise a secondary standard.

www.chemistry-assignment.com/primary-standard-and-secondary...

A standard solution is one whose concentration is known (to an appropriate number of significant figures, s.f.) and which doesn’t go off with time i.e. is stable. A standard solution is prepared by dissolving a definite weight of substance (a primary standard), in a definite volume.

www.reference.com/science/secondary-standard-solution-d...

A secondary standard solution is a chemical term that refers to a solution that has its concentration measured by titration with a primary standard solution, explains EasyChem.com. The amount of chemical reactants in the primary standard solution is known beforehand. Mathematical equations determine how many ions are in a secondary standard ...

www.differencebetween.com/difference-between-primary-and...

The key difference between primary and secondary standard solution is that primary standard solution has a high purity and less reactivity whereas secondary solution has a less purity and high reactivity.. Standardization is the process of finding the exact concentration of a prepared solution using a standard solution as the reference. Standard solutions have accurately known concentrations ...

chemistry.stackexchange.com/.../primary-and-secondary-standard

In general these carbonates contaminate alkaline solutions quite readily through this reaction: $\ce{OH- + CO2 -> HCO3-}.$ This is why we would have to titrate the concentration of $\ce{NaOH} $ solution with a primary standard before using it as a secondary standard.

goldbook.iupac.org/S05924.html

A primary standard is a substance of known high purity which may be dissolved in a known volume of solvent to give a primary standard solution. If stoichiometry is used to establish the strength of a titrant, it is called a secondary standard solution. The term secondary standard can also be applied to a substance whose active agent contents ...