3. Part A.6. A drop of the NaOH titrant adheres to the side of the buret (becaus

Question

3. Part A.6. A drop of the NaOH titrant adheres to the side of the buret (because of a dirty buret) between the initial and inal readings for the titration. As a result of the "clean glass" error, will the molar concentration of the NaOH solution be reported as too high or too low? Explain. 4. Part A. The mass of KHC,H,O, is measured to the nearest milligram: however, the volume of water in which it is dis- solved is never of concern-water is even added to the wall of the Erlenmeyer flask during the titration. Explain why water added to the KHC,H,O, has no effecet on the data, whereas water added to the NaOH solution may drastically affect the data. 5. Part B.2. The wall of the Erlenmeyer flask is occasionally rinsed with water from the wash bottle (see Part A.6) during the analysis of the acid solution. Will this technique result in the molar concentration of the acid solution bein reported as too high, too low, or unaffected? Explain.

Explanation / Answer

That NaOH drop not reacted with the acid solution
but the recordings mistakenly indicated that was reacted. If the volume of NaOH used that was measured would be higher than it should be, it makes the calculated molarity lower than the actual value.

since
molarity=mass/moles
and
moles=concentration x volume

and volume is too high, which makes moles to be too high since they are directly proportional, we know that molarity would be too low since molarity and moles are directly unproportional.

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