Results 1 to 10 of 10
Like Tree2Likes
  • 2 Post By nightweaver066

Thread: please help!!! (titration chemistry)

  1. #1
    Junior Member
    Join Date
    Jul 2011
    HSC
    2014
    Gender
    Female
    Posts
    120
    Rep Power
    5

    please help!!! (titration chemistry)

    i will be soon have a prac test on titration T_T
    if anyone have any good titration practice question please share...
    please find some for me. coz i need lot of practice...

  2. #2
    Executive Member nightweaver066's Avatar
    Join Date
    Jul 2010
    HSC
    2012
    Gender
    Male
    Posts
    1,590
    Rep Power
    7

    Re: please help!!! (titration chemistry)

    These should keep you busy for a while. I haven't decided on whether they're good or not, but difficulty is relative and i hope this practise is beneficial and will help you for your practical test.

    A standard solution was prepared by dissolving 1.432g of sodium carbonate in water. The solution was made up to 250mL in a volumetric flask. Calculate the concentration of the sodium carbonate solution.The solution was used to determine the concentration of a solution of hydrochloric acid. Four 25.00mL samples of acid were titrated with the sodium carbonate solution. The average titration volume was 22.35mL. Why was it necessary to conduct four titrations? Calculate the concentration of the hydrochloric acid solution.


    10. (2 marks)
    During a titration, the acid and base are usually mixed in a flask. This flask is rinsed with water only and not with the
    solution to be placed in it, explain why this is done.





    17. (4 marks)
    Find the volume of 0.15 mol/L NaOH that will neutralise 25 mL of 0.06 mol/L sulfuric acid.



    20. (2 marks)
    A student performed a titration using NaOH and orange juice. Explain why phenolphthalein is a more suitable indicator
    than methyl orange.



    Last edited by nightweaver066; 24 Apr 2012 at 10:20 PM.

  3. #3
    Exalted Member deswa1's Avatar
    Join Date
    Jul 2011
    HSC
    2012
    Gender
    Male
    Posts
    2,258
    Rep Power
    6

    Re: please help!!! (titration chemistry)

    Try doing HSC 2010 Q28. Look at the marking guidelines and sample answer if you need help with it...

  4. #4
    Junior Member
    Join Date
    Jul 2011
    HSC
    2014
    Gender
    Female
    Posts
    120
    Rep Power
    5

    Re: please help!!! (titration chemistry)

    Quote Originally Posted by deswa1 View Post
    Try doing HSC 2010 Q28. Look at the marking guidelines and sample answer if you need help with it...
    oh thank you thank you !!!

  5. #5
    Junior Member
    Join Date
    Jul 2011
    HSC
    2014
    Gender
    Female
    Posts
    120
    Rep Power
    5

    Re: please help!!! (titration chemistry)

    Quote Originally Posted by nightweaver066 View Post
    These should keep you busy for a while. I haven't decided on whether they're good or not, but difficulty is relative and i hope this practise is beneficial and will help you for your practical test.

    A standard solution was prepared by dissolving 1.432g of sodium carbonate in water. The solution was made up to 250mL in a volumetric flask. Calculate the concentration of the sodium carbonate solution.The solution was used to determine the concentration of a solution of hydrochloric acid. Four 25.00mL samples of acid were titrated with the sodium carbonate solution. The average titration volume was 22.35mL. Why was it necessary to conduct four titrations? Calculate the concentration of the hydrochloric acid solution.


    10. (2 marks)
    During a titration, the acid and base are usually mixed in a flask. This flask is rinsed with water only and not with the
    solution to be placed in it, explain why this is done.





    17. (4 marks)
    Find the volume of 0.15 mol/L NaOH that will neutralise 25 mL of 0.06 mol/L sulfuric acid.



    20. (2 marks)
    A student performed a titration using NaOH and orange juice. Explain why phenolphthalein is a more suitable indicator
    than methyl orange.



    wow.... they are really good thank you so much!

  6. #6
    Executive Member nightweaver066's Avatar
    Join Date
    Jul 2010
    HSC
    2012
    Gender
    Male
    Posts
    1,590
    Rep Power
    7

    Re: please help!!! (titration chemistry)

    Oh and the 2011 HSC question on titration is pretty good.

  7. #7
    Junior Member
    Join Date
    Jul 2011
    HSC
    2014
    Gender
    Female
    Posts
    120
    Rep Power
    5

    Re: please help!!! (titration chemistry)

    Quote Originally Posted by nightweaver066 View Post
    Oh and the 2011 HSC question on titration is pretty good.
    oh okok !thanks!! ummm but what question... may i ask?

  8. #8
    Executive Member nightweaver066's Avatar
    Join Date
    Jul 2010
    HSC
    2012
    Gender
    Male
    Posts
    1,590
    Rep Power
    7

    Re: please help!!! (titration chemistry)

    Quote Originally Posted by moniyoo View Post
    oh okok !thanks!! ummm but what question... may i ask?
    Q26

  9. #9
    eal
    eal is offline
    New Member
    Join Date
    Feb 2013
    HSC
    2014
    Gender
    Female
    Posts
    7
    Rep Power
    4

    Re: please help!!! (titration chemistry)

    What is the difference between reliability, reproducability, validity and accuracy in a titration experiment?
    And what are the controlled variables, independent and dependent variables?
    Thanks guys!

  10. #10
    New Member
    Join Date
    Aug 2015
    HSC
    2016
    Gender
    Male
    Posts
    1
    Rep Power
    2

    Smile Re: please help!!! (titration chemistry)

    Quote Originally Posted by nightweaver066 View Post
    These should keep you busy for a while. I haven't decided on whether they're good or not, but difficulty is relative and i hope this practise is beneficial and will help you for your practical test.

    A standard solution was prepared by dissolving 1.432g of sodium carbonate in water. The solution was made up to 250mL in a volumetric flask. Calculate the concentration of the sodium carbonate solution.The solution was used to determine the concentration of a solution of hydrochloric acid. Four 25.00mL samples of acid were titrated with the sodium carbonate solution. The average titration volume was 22.35mL. Why was it necessary to conduct four titrations? Calculate the concentration of the hydrochloric acid solution.


    10. (2 marks)
    During a titration, the acid and base are usually mixed in a flask. This flask is rinsed with water only and not with the
    solution to be placed in it, explain why this is done.





    17. (4 marks)
    Find the volume of 0.15 mol/L NaOH that will neutralise 25 mL of 0.06 mol/L sulfuric acid.



    20. (2 marks)
    A student performed a titration using NaOH and orange juice. Explain why phenolphthalein is a more suitable indicator
    than methyl orange.



    hi what is the answer

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •