In the titrating vinegar expirment briefly explain if the following errors would result in high or low expermental determination of the molar concentration of ch3cooh

1) a student uses the pipet bulb to blow the last bit of vinegar sample from the titration flask after the pipet has drained.

2) a student fail to clean the pipet first. after deliviring the vinegar sample, the student noticed a drop of vinegar clinging to the inner surface of the pipet

3) a student stops the titration when the pink persists throughout solution for less than 10 s

4) after completing a titration, a student noticed that the buret is not clean. droplet of NaOH solution are clinging to the inner surface of the buret