Titration

Question 1

Why are only 3 drops of indicator used and not more

Answer 1

The indicator is weakly acidic therefore too much would react with NaOH

Question 2

How could you improve on the method they have given

Answer 2

Let the burrette fill at the tip

Question 3

Suggest a reason for removing the funnel after filling the burette.

Answer 3

Drops from the funnel into the buttery would lower the titre

Question 4

Suggest one other source of error in using the burette to carry out a titration

Answer 4

If the tap has a bubble it will fill during the experiment which will increase the titre

Question 5

During titration Why is the inside of the conical flask rinsed with distilled water

Answer 5

To ensure all the reactants are in the flask correctly

Question 6

Explain why the water used for rinsing has no effect on the experiment

Answer 6

Because water doesn’t react with acid or alkaline

Question 7

Why is it better to use a volumetric flask instead of a large beaker for 250cm3

Answer 7

Because it’s easier to swirl and less spillage

Question 8

Suggest one reason why repeating a titration makes the value of the average titre more reliable

Answer 8

Can find an average and can’t identify any anomalies