Why is pure sulfuric acid unsuitable for direct standard solution preparation?

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SUMMARY

Pure sulfuric acid is unsuitable for direct standard solution preparation due to its hygroscopic nature, which means it readily absorbs moisture from the air. This absorption can lead to inaccurate concentration measurements, affecting the reliability of titration results. Additionally, the high density and corrosive properties of concentrated sulfuric acid complicate handling and dilution processes. Therefore, using a stable, non-hygroscopic standard solution is recommended for accurate titrations.

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titration-->pure sulphuric acid

Homework Statement


Why pure/conc. sulphuric acid is not suitable to prepare a standard solution directly?


Homework Equations





The Attempt at a Solution


I know that it is hygroscopic,but what does it mean?Why absorbing moisture from the air will affect the result of titration?
 
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