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Answer to Question #57310 in Other Chemistry for panos

Question #57310
what is the type of error (positive or negative) during the calculation of concentration if the following occurs:
during the volumetric analysis of Potassium hydrogen phthalate, a solution of NaOH contaminated with CO2 was used.
Expert's answer
KHC8H4O4 + NaOH → KNaC8H4O4 + H2O
Since, NaOH contaminated with CO2, its concentration lower than supposed, you will received higher concentration value for Potassium hydrogen phthalate than real – positive error.

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Assignment Expert
17.01.16, 13:18

Dear panos. Yes. The volume of NaOH reacting with KHP is larger.

16.01.16, 17:51

Since NaOH is contaminated with CO2, its concentration is lowered meaning that the volume of NaOH reacting with KHP is larger?

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