Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta
    Offline

    2
    ReputationRep:
    (Original post by DesignPredator)
    I just said that racemic mixture could be formed with other optical isomer which could have harmful effects. To solve this find a process which is stereospecific.
    I mentioned the stereospecific part
    Offline

    3
    ReputationRep:
    What do we reckon on grade boundaries


    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    (Original post by GrandMasti)
    There were 3 steps in the sythesis of benzamide right? Oxidation by K2Cr2O7, then PCl5, then Ammonia to form the amide?
    Yes that's what I did
    Offline

    2
    ReputationRep:
    (Original post by GrandMasti)
    There were 3 steps in the sythesis of benzamide right? Oxidation by K2Cr2O7, then PCl5, then Ammonia to form the amide?
    Do you think that was the only way to do it? I'm not sure about what I did now
    Offline

    6
    ReputationRep:
    (Original post by Supermanxxxxxx)
    What do we reckon on grade boundaries


    Posted from TSR Mobile
    Unfortunately quite high
    Offline

    3
    ReputationRep:
    (Original post by Whizbox)
    Unfortunately quite high
    So like 70/90 for an a


    Posted from TSR Mobile
    Offline

    3
    ReputationRep:
    (Original post by Beautywithabrain)
    It was Zn(OH)2 wasn't it? That's amphoteric
    Yep that's right
    Offline

    2
    ReputationRep:
    (Original post by Funky_Giraffe)
    Ah ok. But it wasn't a disproportionation for the previous question, was it?
    for the equation did it say ionic equation ?

    i put cucl2 +hcl + cu = 2 (cucl2)- + 2H plus
    Offline

    6
    ReputationRep:
    Here's my reckoning with GBs

    a* 76
    a 72
    b 68

    then keep going down in 4's
    Offline

    3
    ReputationRep:
    (Original post by lfcrules)
    yeah , just like when yoi have the fe 2 / fe 3 half cel you have both ions i think
    was platinum electrode correct?
    Offline

    6
    ReputationRep:
    (Original post by lfcrules)
    for the equation did it say ionic equation ?

    i put cucl2 +hcl + cu = 2 (cucl2)- + 2H plus
    I put that yes - although you would need 2HCl to balance. I'm talking about the question after this where it was like define disproportionation and hence say whether this is or isn't. It isn't is it?
    Offline

    6
    ReputationRep:
    (Original post by lfcrules)
    for the equation did it say ionic equation ?

    i put cucl2 +hcl + cu = 2 (cucl2)- + 2H plus
    I put that, can't remember if it said ionic or not but I literally had no idea on that question
    Offline

    6
    ReputationRep:
    (Original post by nishofficial)
    was platinum electrode correct?
    yeah
    Offline

    6
    ReputationRep:
    (Original post by lfcrules)
    same
    yess
    Offline

    6
    ReputationRep:
    (Original post by Funky_Giraffe)
    I put that yes - although you would need 2HCl to balance. I'm talking about the question after this where it was like define disproportionation and hence say whether this is or isn't. It isn't is it?
    It is because copper metal is (0) and CuCl2 Copper is (2) and in (CuCl2)- Copper is (1) so it's simultaneously oxidised from 0 to 1 and reduced from 2 to 1
    Offline

    6
    ReputationRep:
    I messed up on the synthesis question
    Offline

    9
    ReputationRep:
    (Original post by Whizbox)
    I put that, can't remember if it said ionic or not but I literally had no idea on that question
    The ionic one was the hydroxide precipitate one.
    Offline

    6
    ReputationRep:
    (Original post by Whizbox)
    It is because copper metal is (0) and CuCl2 Copper is (2) and in (CuCl2)- Copper is (1) so it's simultaneously oxidised from 0 to 1 and reduced from 2 to 1
    oh crap :/
    Offline

    3
    ReputationRep:
    Ligand exchange for the 1 marker
    Offline

    6
    ReputationRep:
    (Original post by lfcrules)
    for the equation did it say ionic equation ?

    i put cucl2 +hcl + cu = 2 (cucl2)- + 2H plus
    no im pretty sure it just said equation
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: September 21, 2016
Poll
Do you agree with the proposed ban on plastic straws and cotton buds?

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.