Question

For vinegar titration in this experiment, would the following errors cause the % acetic acid in vinegar determined to be (A) too large, (B) too small, (C) no effect, or (D) not enough information to answer. Assume that the mistake given is the only mistake made in the experiment. EXPLAIN.
1.) The burst is rinsed with distilled water, but not NaOH solution before the vinegar sample is titrated.
2.) After standardization, the NaOH solution is not stoppered and obsorbs CO2 (from the air) before titration is carried out.
3.) The vinegar sample absorbs CO2 from the air before titration is carried out.

detoned to be 4. For the vinegar titration in this experiment, would the following errors cause the % acetic acid in vinegar determined to be (A) too large, (B) too small, (C) no effect, or (D) not enough information to answer. Assume that the mistake given is the only mistake made in the experiment. Explain. The buret is rinsed with distilled water, but not NaOH solution before the vinegar sample is titrated Alter standardization, the NaOH solution is not stoppered and absorbs CO2 (from the air before titration is carried out. The vinegar sample absorbs CO, from the air before titration is carried out. The endpoint is too pink during standardization of the NaOH solution. The endpoint is too pink during titration of the vinegar solution. The flask is not dry when the vinegar solution is added into it.

4.) The endpoint is too pink during standardization of the NaOH solution.
5.) The endpoint is too pink during the titration of the vinegar solution.
6.) The flask is not dry when the vinegar solution is added into it.

Answer 1

Answer: Page Nooo Given that, for Vinegar errass and titration Effects on in the this experimental % of acetic acid . (1.) when the buret is einsed with water but not Naon ; (A) TOO Garge. The Most would get diluted with watu present in bulet and we would end up using excess NQCH (now dilute) for titration (2) Nooth solution was not stoppered aftu standa - risation : (A) TOO large. Naoth gets diluted with H₂O absorbed from air and hence we would user greatu Nach volume for titoation. (3) Vinegar solution absorbes como CAD too lange. Nach would also react with LQ in solution to from Na₂CO3 and this greatu volume of Noot would be used.

Page No - ② . (4) End point is standarisation of Naoh was too pink: (B) Too low The resting Nach Holarity is callelated low and so low moles of acetic acid would be obtained by this . (5) End point of vinega tration was too pink : (A) TOO high. More xloot was added, higher Holes of acetic alid. (6) The added - flase is not day when vinegar is : 10) no effect. Holes of vinegar remains un affected