Y12 Learning Check (21st Sept)

Choose option below

• A

• B

• C

• D

Choose option below

• A

• B

• C

• D

Choose option below

• A

• B

• C

• D

Choose option below

• A

• B

• C

• D

Choose an option below

• A

• B

• C

• D

Choose an option below...

• A

• B

• C

• D

A titration of HCl and NaOH produced a titre of 27.35cm3. Calculate the percentage error in this measurement.

• 1.8 x 10-3

• 0.18

• 3.6 x 10-3

• 0.36

In a titration of HCl (in the burette) against NaOH (in the conical) the acid used was made up incorrectly and was 1.5 mol dm-3 rather than 1.0 mol dm-3. What would this do to the percentage error recorded for the experiment?

• Less acid would be needed for the titration, the titre would be less and so the percentage error would be smaller

• Less acid would be needed for the titration, the titre would be less and so the percentage error would be greater

• More acid would be needed for the titration, the titre would be more and so the percentage error would be smaller

• Less acid would be needed for the titration, the titre would be more and so the percentage error would be smaller