Turn on thread page Beta
    • Thread Starter
    Offline

    3
    ReputationRep:
    My teacher said its to do with adding HCl but could someone explain the procedure to me?
    Offline

    19
    ReputationRep:
    The presence of H+ ions would cause it to become acidic I guess? Maybe some sort of oxidation reaction occurs. I haven't heard of this before so I'm just guessing.
    • Thread Starter
    Offline

    3
    ReputationRep:
    (Original post by Mayhem™)
    The presence of H+ ions would cause it to become acidic I guess? Maybe some sort of oxidation reaction occurs. I haven't heard of this before so I'm just guessing.
    Thanks
    • Thread Starter
    Offline

    3
    ReputationRep:
    Does anyone know the actual procedure?
    • Thread Starter
    Offline

    3
    ReputationRep:
    (Original post by AqsaMx)
    Does anyone know the actual procedure?
    Does anyone know how to convert a carboxylate into a carboxylic acid?
    So I know you have for example CH3CH2COO- + HCL so would the Proton join onto the COOH part reforming the carboxylic acid and the Cl also joins onto it?
    And visually how would you be able to see that the carboxylic acid is formed?
    Offline

    3
    ReputationRep:
    (Original post by AqsaMx)
    Does anyone know how to convert a carboxylate into a carboxylic acid?
    So I know you have for example CH3CH2COO- + HCL so would the Proton join onto the COOH part reforming the carboxylic acid and the Cl also joins onto it?
    And visually how would you be able to see that the carboxylic acid is formed?
    Yep exactly.
    The carboxylate accepts the proton.

    The chloride ion wouldn't join onto the carboxylic acid, it would combine with the cation from the salt. Say you had Sodium Propanoate, the Sodium, Na+, ion would combine with the Cl- ion to form NaCl.

    Well, most carboxylic acids are colourless and soluble in water, unless you've got acid chains at about 8 carbons or above.
    You could detect use the simple test for carboxylic acids (Sodium Carbonate and effervesence)
    • Thread Starter
    Offline

    3
    ReputationRep:
    So you just get the carboxylic acid and Cl-?
    Okay thank you!
    Also are you aware of what the full experiment is?
    My teacher said something about adding HCl until the solid disappears?
    Offline

    14
    ReputationRep:
    There is no redox reaction ini acid-base reactions. It's only the transfer of protons not electrons

    (Original post by Mayhem™)
    The presence of H+ ions would cause it to become acidic I guess? Maybe some sort of oxidation reaction occurs. I haven't heard of this before so I'm just guessing.
    Offline

    14
    ReputationRep:
    (Original post by AqsaMx)
    So you just get the carboxylic acid and Cl-?
    Okay thank you!
    Also are you aware of what the full experiment is?
    My teacher said something about adding HCl until the solid disappears?
    yeah so the solid will be the salt and you add excess HCl to make sure all of the salt has reacted.
    Offline

    14
    ReputationRep:
    You hydrolyse the salt (I'm guessing you're talking about esters) with an acid catalyst.
 
 
 

University open days

  1. University of Bradford
    University-wide Postgraduate
    Wed, 25 Jul '18
  2. University of Buckingham
    Psychology Taster Tutorial Undergraduate
    Wed, 25 Jul '18
  3. Bournemouth University
    Clearing Campus Visit Undergraduate
    Wed, 1 Aug '18
Poll
How are you feeling in the run-up to Results Day 2018?
Help with your A-levels

All the essentials

The adventure begins mug

Student life: what to expect

What it's really like going to uni

Rosette

Essay expert

Learn to write like a pro with our ultimate essay guide.

Uni match

Uni match

Our tool will help you find the perfect course for you

Study planner

Create a study plan

Get your head around what you need to do and when with the study planner tool.

Study planner

Resources by subject

Everything from mind maps to class notes.

Hands typing

Degrees without fees

Discover more about degree-level apprenticeships.

A student doing homework

Study tips from A* students

Students who got top grades in their A-levels share their secrets

Study help links and info

Can you help? Study help unanswered threadsRules and posting guidelines

Groups associated with this forum:

View associated groups

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.