Hey there! Sign in to join this conversationNew here? Join for free

pH based question.can any one answer with proper concept with calculation. Watch

    • Thread Starter
    Offline

    0
    ReputationRep:
    Which one of the following solution shows the largest change in pH,on addition of 1cm^3 of 0.1moldm^-3 HCl?
    1)24cm^3 of 0.1 moldm^3 HCl
    2)24cm^3 of 0.1 moldm^3 NaOH
    3)24 cm^3 of pure water
    4)24 cm^3 of a solution containing a mixture of 0.05 moldm^3 CH3COONa and 0.05 moldm^3 CH3COOH
    5)24 cm^3 of 0.1 moldm^3 CH3COONa
    • Official TSR Representative
    Offline

    15
    ReputationRep:
    Sorry you've not had any responses about this. Are you sure you've posted in the right place? Here's a link to our subject forum which should help get you more responses if you post there.


    Just quoting in Amusing Elk so she can move the thread if needed :wizard:
    Spoiler:
    Show
    (Original post by Amusing Elk)
    x
    • TSR Support Team
    • Very Important Poster
    • Reporter Team
    • Welcome Squad
    Offline

    19
    ReputationRep:
    (Original post by Inoo)
    Which one of the following solution shows the largest change in pH,on addition of 1cm^3 of 0.1moldm^-3 HCl?
    1)24cm^3 of 0.1 moldm^3 HCl
    2)24cm^3 of 0.1 moldm^3 NaOH
    3)24 cm^3 of pure water
    4)24 cm^3 of a solution containing a mixture of 0.05 moldm^3 CH3COONa and 0.05 moldm^3 CH3COOH
    5)24 cm^3 of 0.1 moldm^3 CH3COONa
    You need to go through them case-by-case and think about what would happen.
    What are your present thoughts?
    • Thread Starter
    Offline

    0
    ReputationRep:
    I got the pH changed to be zero for the first one,I have no idea how to continue for the rest of the answers to check.would you please help me the concept with calculation.
    Offline

    3
    ReputationRep:
    (Original post by Inoo)
    I got the pH changed to be zero for the first one,I have no idea how to continue for the rest of the answers to check.would you please help me the concept with calculation.
    See attached. You need to know Ka and Kb to do it properly. Have you learned this?
    Attached Images
     
    • Thread Starter
    Offline

    0
    ReputationRep:
    Here calculation is not to do more work therefore it is not given about Ka and Kb.i need to know the idea how for the rest of the other options lesser pH change and for pure water the change is high.
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    What newspaper do you read/prefer?
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

    Quick reply
    Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.