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Chemistry question.?

Why does NaOH need to be standardized?

2 Answers

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  • Dr.A
    Lv 7
    1 decade ago
    Favorite Answer

    Pellets of solid NaOH absorb CO2 from the atmosphere and become contamined with Na2CO3.

    So we standardize free NaOH with potassium hydrogen phtalate ( KHP) since Na2CO3 is a weaker base having a different endpoint

  • 1 decade ago

    Standardizing means to determine the exact concentration. It is especially useful when you are titrating and need to know the concentration of an unknown acid. You usually need to standardize because NaOH is extremely hygroscopic, it attracts water from the air. So, when it is in solution, the water can evaporate out, leaving you with a higher concentration than expected, or the water will be attracted to the solution, making the concentration less concentrated.

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