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

    1
    ReputationRep:
    If I'm given a solution containing sucrose (0.55 mol dm-3, 50cm3), and required to make a sucrose solution with a concentration of 3.2 x 10-2 mol dm-3, will I do that by changing the volume as follows?

    C1 x V1 = C2 X V2

    0.55 mol dm-3 x 0.05 dm-3 = 3.2 x 10-2 mol dm-3 x V2

    V2 = 0.8594 dm-3

    So, can we say that in order to make a sucrose solution with a concentration of 3.2 x 10-2 mol dm-3, we need V2-V2 dm-3? That is, 0.8594 dm-3 - 0.05 dm-3 = 0.8094 dm-3?

    Is it right that way?

    Thanks.
    Offline

    18
    ReputationRep:
    Get 0.0032 mols of sucrose, then make upto the mark of 1 litre with distilled water.

    EDIT: Woops didn't read the rest :mmm:
    • Thread Starter
    Offline

    1
    ReputationRep:
    (Original post by thegodofgod)
    Get 0.0032 mols of sucrose, then make upto the mark of 1 litre with distilled water.

    EDIT: Woops didn't read the rest :mmm:
    Thanks for your reply.

    I forgot to mention that I have 50cm3 of sucrose, but was shown when applying the equation.

    So, is my solution correct that way?
    Offline

    18
    ReputationRep:
    (Original post by SWEngineer)
    Thanks for your reply.

    I forgot to mention that I have 50cm3 of sucrose, but was shown when applying the equation.

    So, is my solution correct that way?
    Sorry, I'm not too sure - but it does sound right. Haven't done this before
    • Thread Starter
    Offline

    1
    ReputationRep:
    (Original post by thegodofgod)
    Sorry, I'm not too sure - but it does sound right. Haven't done this before
    I see. That's fine.
 
 
 
Poll
Do you agree with the PM's proposal to cut tuition fees for some courses?

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.