Post-Laboratory Questions (Use the spaces provided for the answers and additiona
ID: 695524 • Letter: P
Question
Post-Laboratory Questions (Use the spaces provided for the answers and additional paper if necessary) 1. A student failed to carry out all of the procedural steps when doing this experiment. Wou following procedural vañiations resul in an experimentally determined molariyof high or too low? Briefly explain. NaOH that is too The student did not clean the buret before beginning the titration. After completing the titration, the student noticed that droplets of the titrant were clinging to the inside surface of the barrel. (1) (2) The buret tip was not completely filled with NaOH solution when the titration was begun. The student forgot to add phenolphthalein indicator solution to the KHP solution before doing the titration. (3)Explanation / Answer
1.As the buret is not completely clean, When buret will be filled with NaOH, concentration of NaOH will be lower than the original
2. If the buret tip not filled completely, the volume of NaOH used reading will be higher than expected
3. The endpoint of titration cannot be determined as the addition of indicator during titration is necessary