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

    1
    ReputationRep:
    9.This question concerns four solutions, A to D. They were prepared by mixing equal volumes of 0.2 mol dm–3 solutions of two different substances. The substances were

    A HCl(aq) and NaOH(aq)
    B HCl(aq) and NaCl(aq)
    C NH3(aq) and NH4Cl(aq)
    D CH3COOH(aq) and CH3CO2Na(aq)


    c) have a chloride ion concentration of 0.2 mol dm–3.

    The answer is B and I don't understand why it isn't A

    Please please help with this question !
    • Community Assistant
    • Study Helper
    Offline

    15
    ReputationRep:
    Community Assistant
    Study Helper
    (Original post by red122)
    9.This question concerns four solutions, A to D. They were prepared by mixing equal volumes of 0.2 mol dm–3 solutions of two different substances. The substances were

    A HCl(aq) and NaOH(aq)
    B HCl(aq) and NaCl(aq)
    C NH3(aq) and NH4Cl(aq)
    D CH3COOH(aq) and CH3CO2Na(aq)


    c) have a chloride ion concentration of 0.2 mol dm–3.

    The answer is B and I don't understand why it isn't A

    Please please help with this question !
    When you mix equal volumes you double the total volume ...

    .. does that help you to understand?
    • Thread Starter
    Offline

    1
    ReputationRep:
    (Original post by charco)
    When you mix equal volumes you double the total volume ...

    .. does that help you to understand?
    A little bit thank you, so does that mean the concentration would double ?
    • Community Assistant
    • Study Helper
    Offline

    15
    ReputationRep:
    Community Assistant
    Study Helper
    (Original post by red122)
    A little bit thank you, so does that mean the concentration would double ?
    Concentration gives the amount of a solute in a given volume.
    • Thread Starter
    Offline

    1
    ReputationRep:
    I'm sorry I still don't understand. But thank you for trying 😊


    Posted from TSR Mobile
 
 
 
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.