Results are out! Find what you need...fast. Get quick advice or join the chat
x

Unlock these great extras with your FREE membership

  • One-on-one advice about results day and Clearing
  • Free access to our personal statement wizard
  • Customise TSR to suit how you want to use it

Titration ISA

Announcements Posted on
Rate your uni — help us build a league table based on real student views 19-08-2015
  1. Offline

    ReputationRep:
    Hello TSR,

    I have done a sort of mock ISA and we were asked to complete some evaluation questions but i don't know what the answers of some of them could be, can anyone help please...

    - Why is it important to rinse the burette with
    a - Water
    b - Sulphuric Acid

    - How accurate do you think your experiment was? (We used a 25cm^3 pipette, and a burrette whose readings were in cm^3.)

    - What do you think was the biggest source of error, when completing the titration?

    Any help would be really appreciated, thank you!!
  2. Offline

    ReputationRep:
    (Original post by FutureMedic)
    Hello TSR,

    I have done a sort of mock ISA and we were asked to complete some evaluation questions but i don't know what the answers of some of them could be, can anyone help please...

    - Why is it important to rinse the burette with
    a - Water
    b - Sulphuric Acid

    So that you improve the chances that your concentration of acid is not going to change, as there might be some dry chemical stains on them that may react with your acid, hence inaccurate titration result


    - How accurate do you think your experiment was? (We used a 25cm^3 pipette, and a burrette whose readings were in cm^3.)

    Standard burette usually give accuracy up to two decimal places, ie if you read 25 cm cube it should be written as 25.00 cm cube to reflect this. Pipette generally is up to 1 d.p. only.


    - What do you think was the biggest source of error, when completing the titration?
    Obviously the human reaction time. The end point of certain titrations can be quite hard to spot sometimes, so that's why you do it a couple to times to confirm your results are as accurate as possible - reduce random errors by averaging.

    Any help would be really appreciated, thank you!!
    xx
  3. Offline

    ReputationRep:
    Thank you very much... much appreciated!!

Reply

Submit reply

Register

Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. By joining you agree to our Ts and Cs, privacy policy and site rules

  2. Slide to join now Processing…

Updated: November 9, 2009
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

New on TSR

Rate your uni

Help build a new league table

Poll
How do you read?
Study resources
Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.