Assume after recording the mass of KHP on the weigh paper it was not completely transferred into the Flask. Your following titration was completed correctly. Would your experimental value for concentration of NaOH be too high, too low, or unchanged as compared to the true value? Explain

Question

Chemistry

Lance Parker

17 September, 10:28

Assume after recording the mass of KHP on the weigh paper it was not completely transferred into the Flask. Your following titration was completed correctly. Would your experimental value for concentration of NaOH be too high, too low, or unchanged as compared to the true value? Explain

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Answers (1)

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Madeleine Peterson · Answer 1

unchanged

Explanation:

KHP is potassium hydrogen phthalate. It is a weak acid. It forms a colourless ionic weakly acidic solution which can be titrated against NaOH to determine the concentration of a sodium hydroxide solution. KHP is used as a primary standard. Its concentration depends on the mass of solid added and the volume of solution.

If all the KHP was not transferred into the flask, the experimental value of the concentration of NaOH remains unchanged as long as the titration was carried out correctly and following normal procedure. Only the concentration of the KHP will be affected by this error during calculation.