Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    0
    ReputationRep:
    Im having trouble predicting whether penicillin and barbitone (separately) would dissolve in acidic and basic conditions.

    Im supposed to relate it to their structure.

    Can anyone help me please?
    Offline

    18
    ReputationRep:
    If there is an acidic group then a base will make it a salt and thus soluble in an aqueous solution - the reverse is true for basic groups
    • Thread Starter
    Offline

    0
    ReputationRep:
    Are amide groups acidic or basic?
    Offline

    18
    ReputationRep:
    Slightly basic
    • Thread Starter
    Offline

    0
    ReputationRep:
    Can I also ask another few questions?
    Say I added 5ml of 5N NaOH to a drug.
    The solution is now basic yes?

    If I then added HCl dropwise until the pH was 2, is the solution neutral or acidic?

    And then if I addded NaOH dropwise until the pH was 12, is it now neural or basic?
    Offline

    18
    ReputationRep:
    It all depends on the pH whether it is acidic or basic...

    pH < 7 acidic
    pH > 7 alkaline
 
 
 
Poll
Who is your favourite TV detective?

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

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