What does it mean to standardize a solution

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what does it mean to standardize a solution

In the first standardization the molarity of a sodium hydroxide solution (The buret is clean enough when water droplets do not cling to the inner surface.).

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Chat or rant, adult content, spam, insulting other members, show more. Harm to minors, violence or threats, harassment or privacy invasion, impersonation or misrepresentation, fraud or phishing, show more. Yahoo Answers. In chemistry what does it mean to have a "Standardized" solution. Does this mean it is one molar?

Standardizing a solution refers to the process of determining an unknown concentration of substance within a solution. A common example of See full answer.
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Potassium Hydrogen Phthalate referred in the experiment as KHP was a brittle, white, crystalline substance. The crystals required intense stirring before it could dissolved in water. The resultant Acidic solution was transparent, with a small amount of undissolved granules of KHP. As the transparent NaOH solution came into contact with transparent phenolphthalein in the KHP solution, it turned pink which on shaking became transparent. However, as NaOH was added further, there came a point when no amount of stirring changed the pink colour.

Suppose that you needed a 0. You might think that you could just weigh 4. However, it is very difficult to prepare a solution of NaOH of an exact concentration for two reasons: Solid NaOH is very hygroscopic, that is it absorbs water from the air, so it is very hard to weigh exactly. Solutions of NaOH react with carbon dioxide from the air. Unless the bottle is tightly sealed, the molar concentration of the OH - solution will change on a daily basis. In order to have accurate solutions of NaOH, you must standardize the solution. The best way of doing this is to use a primary standard, which is a solid acid that can be weighed.

By using our site, you acknowledge that you have read and understand our Cookie Policy , Privacy Policy , and our Terms of Service. Chemistry Stack Exchange is a question and answer site for scientists, academics, teachers, and students in the field of chemistry. It only takes a minute to sign up. Surprisingly, there are very few resources online outside of obscure lab pages that explain exactly what standardization is not even Wikipedia! The context is the phrase standardize the titrant for a titration. Does this mean you titrate it with a known solution? Imagine that you need to titrate the sample S with a solution of the reagent R.



Titration Lab: NaOH with Standardized solution of KHP

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Standardization

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Titration Procedure

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5 thoughts on “What does it mean to standardize a solution

  1. Standardization or standardisation is the process of implementing and developing technical standards based on the consensus of different parties that include firms, users, interest groups, standards organizations and governments.

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