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Unknown acid 04g50ml water was titrated with naoh to reach


HA(aq) + OH-(aq) ? H2O + A-(aq)

Unknown acid (0.4g)+(50ml water) was titrated with NaOH to reach the equivalence point.

Result : addition of 15ml NaOH was needed to reach the equivalence point.

The equivalent weight (EW) of acid: EW = grams acid / moles OH- added

EW caluculated was 236.13g

Question:

Suggest two experimental errors which would result in too low a value for the acid EW. Explain how these errors result in a low value.

One error could be the volume of base added at the endpoint during the titration was wrong. too much base was added?

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Chemistry: Unknown acid 04g50ml water was titrated with naoh to reach
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