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NaOH (1 Viewer)

D

dead

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I used to know the answer to this question but now i forgot :(
"why is sodium hydroxide not used as a primary standard?"
i know it might be a stupid question but it has come up and im curious about the answer....:p
 
S

serge

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water can evaporate making the concentration higher...
making the pH higher
Carbon dioxide can dissolve into it making the pH lower
 
Dreamerish*~

Dreamerish*~

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NaOH absorbs moisture from the air and reacts with carbon dioxide, whereas anhydrous sodium carbonate does not, but you still need to dessicate it.
 
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